Introduction
Reaching the third trimester is not only an exciting phase but also a time filled with many questions. For me, the final trimester was an emotional period. After months of waiting, my pregnancy journey was finally coming to an end.
In both of my pregnancies, my mood swings increased during the third trimester. I had mixed emotions. Some days, I couldn’t wait to meet my baby, while on other days I felt very nervous about labour. I also kept thinking about my toddler and how she would react to becoming a big sister.
I know these feelings are completely normal, and many expecting mothers experience them.
If you’re confused about what to expect during the third trimester, this guide will help. I’ll explain what happens during the third trimester, how your baby develops week by week, the common symptoms you may notice, and what to expect during the final months of pregnancy.
If you are still in the earlier stages of pregnancy, you can also read my guides on the First Trimester Pregnancy Guide and Second Trimester Pregnancy Guide to understand what to expect during each stage of your journey.
What Is the Third Trimester?
The third trimester is the final stage of pregnancy. If you are entering 28 weeks of pregnancy, you have officially entered the third trimester. A full-term pregnancy usually lasts around 40 weeks. However, some babies arrive a little earlier, while others are born a little later. Both can be completely normal.
During this final trimester, your baby’s growth becomes much faster, and your baby continues to gain weight. The lungs, brain, and other organs continue maturing and preparing for life outside the womb.
As your baby grows rapidly, your own weight also continues to increase. I explain what healthy weight gain looks like throughout pregnancy in my guide, Pregnancy Weight Gain by Week: How Much Should You Gain Each Trimester?
By now, you may notice your baby kicking much more often. As your baby grows bigger and has less room inside the womb, the movements may start feeling stronger and more noticeable.
During this stage, your body also works hard to prepare for labour and birth. Your uterus continues to expand, your breasts begin preparing for breastfeeding, and pregnancy hormones help your body get ready for delivery. Because of these natural changes, you may notice several symptoms. They can sometimes feel difficult, but as mothers, we happily go through them for our babies.
With a little extra care, you can continue many of your daily activities during this trimester. Eating balanced meals, drinking enough water, staying active with gentle walking, getting enough rest, and attending your regular prenatal appointments can help you feel better.
One mistake I made during my first pregnancy was comparing my journey with others. Try not to compare yourself with other mothers, because every pregnancy is unique.
Third Trimester Baby Development Week by Week
During the third trimester, I looked at myself in the mirror at least once every day to see how much my tummy had grown. I even took photos of my growing belly almost every day.
Even though I experienced many pregnancy symptoms, watching my belly grow made me feel proud because I knew my baby was growing stronger every day.
One of my favourite experiences was feeling my baby’s hiccups. The first time I felt those small rhythmic movements, I didn’t know what they were and became a little worried. Later, I learned they were simply baby hiccups, and after that, I always smiled whenever I felt them.
Here’s what usually happens during your baby’s development from week 28 to week 40.
Week 28–31: Rapid Growth Continues
By week 28, your baby continues growing quickly. More body fat starts building under the skin, which helps your baby stay warm after birth.
Your baby’s brain also develops rapidly, and the lungs continue maturing. Although the lungs are not yet fully developed, they are getting ready for breathing after birth.
One interesting milestone during this stage is that your baby can usually open and close their eyes, respond to light, and recognise your voice along with other familiar voices.
Week 32–35: Getting Ready for Birth
During this stage, your baby’s movements may feel different because there is less space inside the womb. You may notice more rolling, stretching, and pushing instead of large kicks.
By this time, many babies move into the head-down position, getting ready for birth. Some babies may turn a little later. If your baby is still in the breech position, your healthcare provider will continue to monitor your baby’s position during regular check-ups.
I especially noticed these changes at night. Depending on the position I slept in, I could often feel my baby slowly moving from one side to the other. Those little movements always reminded me that she was getting ready to meet us.
Week 36–40: Almost Ready to Meet You
Your pregnancy journey is almost over, and you may meet your baby at any time. By this stage, your baby’s organs are fully developed and continue preparing for life outside the womb.
In both of my pregnancies, I delivered around 37 weeks. Both of my babies were healthy, but that’s a story for another day!
As labour approaches, your baby may settle lower into the pelvis. This can reduce pressure on your lungs but increase pressure on your bladder.
I still remember those final days. Even the smallest unusual movement made me wonder, “Is labour starting? Is my water about to break?” Looking back, I realised many of those sensations were simply my body preparing for the big day.
Some babies arrive earlier, while others take a little longer. Your healthcare provider will continue monitoring you and your baby until it’s time to welcome your little one into the world.
How Big Is Your Baby During the Third Trimester?
During both of my pregnancies, I was always curious to know how big my baby had become and whether she had gained enough weight in case I delivered that day.
The table below is only a general guide to help you understand your baby’s growth throughout the third trimester. Your baby’s actual size and weight can vary, and your healthcare provider will monitor your baby’s growth during pregnancy.
| Week | Approximate Size | Approximate Weight |
| 28 Weeks | Eggplant | ~1 kg (2.2 lb) |
| 29 Weeks | Butternut squash | ~1.2 kg (2.6 lb) |
| 30 Weeks | Large cabbage | ~1.3 kg (2.9 lb) |
| 31 Weeks | Coconut | ~1.5 kg (3.3 lb) |
| 32 Weeks | Jicama | ~1.7 kg (3.7 lb) |
| 33 Weeks | Pineapple | ~1.9 kg (4.2 lb) |
| 34 Weeks | Cantaloupe | ~2.1 kg (4.7 lb) |
| 35 Weeks | Honeydew melon | ~2.4 kg (5.3 lb) |
| 36 Weeks | Romaine lettuce | ~2.6 kg (5.7 lb) |
| 37 Weeks | Swiss chard | ~2.9 kg (6.3 lb) |
| 38 Weeks | Leek | ~3.1 kg (6.8 lb) |
| 39 Weeks | Mini watermelon | ~3.3 kg (7.3 lb) |
| 40 Weeks | Small pumpkin | ~3.4–3.6 kg (7.5–8 lb) |
Common Third Trimester Symptoms
The third trimester brings many physical changes as your body prepares for labour and your baby continues to grow. Some symptoms are common during this stage, while others may need medical attention.
If you are concerned about any symptoms, always inform your doctor during your appointments or contact your healthcare provider for advice.
My Experience With Third Trimester Challenges
The third trimester was a beautiful but challenging phase of my pregnancy journey. As my baby grew bigger, I noticed that even simple daily activities required more effort.
For me, the biggest challenges were back pain, disturbed sleep, and adjusting to my changing body. Since we lived on the 5th floor without an elevator, climbing stairs became harder as my belly grew. I learned to slow down, take breaks, and listen to my body.
Even though some days were difficult, I also enjoyed many special moments, especially feeling my baby’s movements and knowing that I was getting closer to meeting my little one.
Some of the most common third trimester symptoms include:
1. Back Pain
As your baby grows, you may feel more pressure on your back and pelvis. Taking short breaks, changing positions regularly, and supporting your lower back while sitting may help reduce discomfort.
2. Heartburn and Indigestion
I experienced mild heartburn during my pregnancies, but it was not severe. Many women experience heartburn or indigestion during the third trimester because the growing uterus can put pressure on the stomach, making acid reflux more likely.
Some simple things that may help include:
- Eating smaller meals more frequently instead of large meals
- Avoiding foods that trigger heartburn
- Avoiding lying down immediately after eating
- Taking a short walk after meals if you feel comfortable
If you want to learn more about managing heartburn during pregnancy, this guide: Heartburn During Pregnancy: Causes, Relief, Foods & Safe Remedies can help
3. Swollen Feet and Ankles
I experienced mild swelling in my feet during my pregnancies, but it was not severe. Regular movement helped me stay comfortable, and walking was also part of how I managed my blood sugar levels during gestational diabetes, based on my doctor’s advice.
Many women notice swelling in their feet and ankles during the third trimester. This happens because the body naturally holds more fluid during pregnancy, and the growing uterus can affect blood circulation.
Some simple ways that may help reduce discomfort include:
- Avoid standing for long periods
- Take short breaks and move around regularly
- Elevate your feet while resting
- Wear comfortable footwear
If you notice sudden or severe swelling, especially along with symptoms like a severe headache, vision changes, or high blood pressure, contact your healthcare provider immediately.
4. Braxton Hicks Contractions
Braxton Hicks contractions are often called false contractions or practice contractions. They are common during the third trimester and help your uterus prepare for labour, but they usually do not mean that labour has started.
During my pregnancies, I sometimes felt my tummy suddenly become tight for a short time. It felt unusual at first, but the tightening relaxed after a few minutes.
These contractions are usually irregular and may settle when you rest, change your position, or drink water.
Contact your healthcare provider if contractions become regular, stronger, closer together, or if your water breaks.
When Braxton Hicks Contractions Are Usually Normal
| Situation | Usually Means |
| Occasional tummy tightening | Common practice contractions |
| Irregular contractions | Usually Braxton Hicks |
| Goes away after rest or changing position | More likely Braxton Hicks |
| Mild and not increasing in intensity | Usually normal |
5. Difficulty Sleeping
Getting comfortable at night can become challenging during the third trimester because of your growing belly, frequent bathroom trips, and your baby’s movements.
During my pregnancies, using a pregnancy pillow and placing it between my legs helped me find a more comfortable sleeping position.
Some things that may help include:
- Using support pillows to reduce pressure on your back and hips
- Finding a comfortable side-sleeping position
- Creating a relaxing bedtime routine
- Planning your fluid intake earlier in the evening may help reduce nighttime bathroom trips.
I shared what helped me and some useful tips in my guide: Best Pregnancy Pillows for Side Sleeping (2026 Guide): Sleep Better & Reduce Pain.
6. Frequent Urination
As your baby grows, your uterus puts more pressure on your bladder, and you may find yourself needing to use the bathroom more often, especially during the night.
I know it can feel frustrating when your sleep is already interrupted, but do not reduce your water intake because of frequent bathroom trips. Staying hydrated is still very important during pregnancy.
7. Shortness of Breath
As your uterus expands during the third trimester, it can put pressure on your diaphragm, making it feel harder to take a deep breath.
I noticed this especially during daily activities. Since we lived on the 5th floor without an elevator, climbing stairs became more challenging as my belly grew. Taking short breaks and slowing down helped me manage it better.
Listening to your body and avoiding overexertion can help you feel more comfortable.
However, if you experience sudden or severe shortness of breath, chest pain, dizziness, or difficulty breathing even while resting, contact your healthcare provider for medical advice.
8. Stronger Baby Movements
Among all the changes I experienced during pregnancy, I would not consider this a symptom. For me, it was one of the most beautiful parts of pregnancy.
As I moved further into the third trimester, I could feel my baby pushing my tummy with her tiny feet and elbows. Those little movements felt so precious, and I even recorded some videos to remember those special moments.
Every baby has their own movement pattern, so it is helpful to learn what is normal for your baby. If you notice a significant decrease in your baby’s usual movements, contact your healthcare provider for advice.
If you are curious about when baby movements usually begin, you can read more in our guide: When Do You Start Feeling Your Baby Move? Week-by-Week Guide to First Baby Movements.
9. Pelvic Pressure
As your baby grows and moves lower into your pelvis, you may feel increased pressure in your lower abdomen, hips, or pelvic area, especially during the final weeks of pregnancy.
During my pregnancy, gentle walking, comfortable footwear, and resting whenever I needed helped me manage this extra pressure and discomfort.
Every pregnancy is different, so listen to your body and avoid activities that feel uncomfortable.
10. Feeling More Emotional
The third trimester can bring a mixture of excitement, happiness, nervousness, and many different emotions as your delivery date gets closer.
During my pregnancy, I felt a combination of love, anticipation, and occasional worries about the changes ahead. Preparing to welcome a new baby while adjusting to the idea of becoming a family of four brought many emotions that were difficult to explain.
Remember that emotional changes are a normal part of the pregnancy journey. Talk to your loved ones, share your feelings, and take care of your emotional well-being along with your physical health.
Physical Changes You May Notice in the Third Trimester
My baby bump seemed to grow day by day, and even simple daily activities became more challenging.
What I experienced may not be the same as your pregnancy. Many of the changes you notice during the third trimester are completely normal and happen as your baby continues to grow.
Your Baby Bump Continues to Grow
As you get closer to your due date, your baby bump becomes much larger. You may find everyday activities like bending down, getting out of bed, putting on shoes, or even finding a comfortable sleeping position more difficult. I definitely noticed that even simple tasks took a little more effort during the last few weeks of pregnancy.
Your Breasts Prepare for Breastfeeding
One change that surprised me during my first pregnancy was that my breasts started leaking colostrum from the beginning of my third trimester. At first, I was worried and thought something was wrong. After speaking with my doctor, I learned that it was completely normal. He explained that it was colostrum, often called your baby’s first milk, and that some women may notice it during pregnancy. Interestingly, I did not experience any colostrum leakage during my second pregnancy.
As your body prepares for your baby’s arrival, your breasts continue to change. You may notice:
- Larger or heavier breasts
- Darker nipples and areolas
- More visible veins
- Occasional leakage of colostrum (for some women)
These changes are your body’s natural way of preparing to feed your baby after birth.
Stretch Marks May Become More Noticeable
Stretch marks are very common during pregnancy. As your tummy grows to make space for your baby, you may notice stretch marks on your tummy, breasts, hips, or thighs.
In my first pregnancy, I hardly noticed any stretch marks. But during my second pregnancy, I got more stretch marks on my tummy, and they looked pinkish at first.
I tried using Bio-Oil during pregnancy. It did not remove or prevent my stretch marks. I felt it helped reduce the itching as my tummy stretched. The itching was much more uncomfortable for me than the stretch marks themselves.
Some women get many stretch marks, while others notice only a few. They usually fade over time, but they may not disappear completely.
Changes in Your Center of Gravity
As your baby grows and your tummy becomes bigger, your center of gravity changes. I noticed that I started leaning back slightly while walking, and my walk became wider. My friends even joked that I was walking like a penguin!
Because of these changes, you may sometimes experience back pain or feel a little less balanced while walking.
For me, taking things slowly, wearing comfortable shoes, and avoiding sudden movements helped.
And remember, this stage won’t last forever. Soon you’ll be holding your little one in your arms. Until then, enjoy talking to your baby. They can hear your voice, and these last few months are a special time to bond together.
Your Baby May Move Lower
During the final weeks of pregnancy, your baby may move lower into your pelvis to get ready for birth. This is often called “lightening” or when the baby “drops.” You may notice that breathing becomes a little easier, although you might feel more pressure on your bladder and pelvis.
Coming to my little angel, she moved into this position several weeks before labour. At first, I was a little worried because I thought it was too early, but my doctor reassured me that it is completely normal.
Some babies move down a few weeks before labour, while others don’t move lower until labour has already started.
Things That Surprised Me During My Third Trimester
Even after reading so many pregnancy articles, there were still a few things that surprised me during my own third trimester.
My baby had a routine. Both of my babies became much more active around midnight. During the day I sometimes worried because they seemed quieter, but later I realised they simply had their own routine.
I couldn’t bend down anymore. Something as simple as putting on socks or picking up something from the floor became surprisingly difficult during the last few weeks.
My tummy suddenly became hard. The first time I experienced Braxton Hicks contractions, I thought something was wrong. Later I learned they were simply my uterus practising for labour.
I became much slower. I had always been active, but by the final weeks I accepted that slowing down wasn’t laziness. It was simply my body asking for rest.
Every kick felt emotional. Instead of wishing the pregnancy would end, I started appreciating those little kicks because I knew they would soon become beautiful memories.
Healthy Diet During the Third Trimester
During my third trimester, I mostly continued eating the same healthy foods that I had been eating throughout my first and second trimesters.
The biggest change I made was eating smaller, more frequent meals instead of large portions. This helped me feel more comfortable, especially as my baby grew and I started feeling full more quickly.
If you’re looking for a complete trimester-wise meal plan, food ideas, and nutrition tips, you can also read my Pregnancy Diet Chart: Healthy Meal Plan for First, Second & Third Trimester, where I share detailed meal plans, foods to eat, foods to avoid, and practical tips from my own pregnancy journey.
Stay Hydrated
Staying hydrated became even more important during my third trimester because I was waking up several times at night to use the bathroom. It was tempting to drink less water, but I continued drinking enough throughout the day because dehydration can sometimes make Braxton Hicks contractions feel worse.
Setting reminders on my phone helped me remember to drink regularly.
If you’re unsure how much water you should drink during pregnancy, I explain it in detail in my guide, How Much Water Should a Pregnant Woman Drink? A Simple Pregnancy Hydration Guide.
Don’t Skip Your Prenatal Vitamins
Even during the third trimester, my doctor advised me to continue taking my prenatal vitamins every day. After delivery, my midwife also recommended continuing them while breastfeeding. Always follow your healthcare provider’s advice because your supplement needs may be different from someone else’s.
Exercise and Daily Activities During the Third Trimester
As I mentioned earlier, I was diagnosed with gestational diabetes during both of my pregnancies. Walking played a big role in helping me manage my blood sugar levels. I didn’t follow any special exercise routine, but I made sure to walk every day, especially after my meals.
As my due date got closer, I noticed that I couldn’t walk as much or as fast as I could earlier in my pregnancy. My growing baby bump made me feel heavier, and I became tired more quickly. On those days, I simply slowed down and took breaks when needed.
By the last few weeks, even a 20-minute walk felt very different from the walks I took earlier in pregnancy. Instead of trying to achieve a certain number of steps, I focused on moving comfortably and stopping whenever my body asked for a break.
Prepare Your Body and Mind for Labour
As my due date got closer, I slowly shifted my focus from pregnancy to preparing for labour. Instead of worrying about when labour would start, I tried to understand what would happen during delivery and how I could prepare myself emotionally and mentally.
I attended prenatal classes during my pregnancy, and they helped me understand the stages of labour, breathing techniques, and what to expect during delivery. Although I eventually had a C-section after nearly two days of labour, I never felt that attending those classes was a waste. They gave me confidence and helped me stay calm throughout the experience.
One piece of advice from my doctor has always stayed with me: “You can prepare for birth, but your baby often decides when to come and sometimes even how to come.”
That advice helped me stay flexible when my birth didn’t go exactly as I had imagined. Whether you have a vaginal birth or a C-section, the most important thing is that both you and your baby are healthy. Trust your healthcare team, discuss your birth preferences with them, and remember that your birth story will be unique.
Start Packing Your Hospital Bag
I packed my hospital bag around 35 weeks, and it gave me a lot of peace of mind because I knew I would not have to rush if labour started earlier than expected.
I packed many baby clothes, but to be honest, I mostly used the clothes provided by the hospital for my babies during the first day. So don’t stress too much about packing a huge number of newborn outfits.
Learn the Signs of Labour
Before reaching full term, I strongly recommend learning the common signs of labour.
I kept thinking about whether every unusual feeling meant labour had started. Understanding the difference between Braxton Hicks contractions, true labour contractions, water breaking, and the mucus plug helped me feel much more prepared.
Prenatal Appointments
During the last month of pregnancy, my doctor checked my baby’s position, growth, and heartbeat. He also answered every small question I had, even the ones that felt silly at the time.
Warning Signs in the Third Trimester: When to Contact Your Healthcare Provider
Most symptoms you experience in the third trimester are common and completely normal. They are simply signs that your body is preparing for labour. However, some symptoms should not be ignored.
Go to the hospital if you notice any of the following:
- Your baby is moving much less than usual or you cannot feel your baby’s movements.
- Your water breaks, even if you are not having contractions.
- You have regular contractions that become stronger, longer, and closer together, especially before 37 weeks.
- You have heavy vaginal bleeding.
- You develop a severe headache, blurred vision, or sudden swelling of your face or hands.
- You have severe abdominal pain that doesn’t go away.
- You have a fever, chills, or think you may have an infection.
- You have difficulty breathing, chest pain, or feel faint.
Always trust your instincts. You know your body and your baby’s usual movements better than anyone else. If something doesn’t feel right, don’t worry about bothering your doctor or midwife. It is always better to get checked and be reassured than to ignore a symptom that may need medical attention.
Trusted Resources for Third Trimester Pregnancy Information
The information in this guide is based on my personal pregnancy experiences along with guidance from trusted medical organizations. Every pregnancy is different, so always consult your doctor, midwife, or healthcare provider for advice specific to your situation.
For additional evidence-based pregnancy information, you can refer to:
NHS – Pregnancy, labour, and birth information
ACOG – Pregnancy guidance and childbirth information
Mayo Clinic – Pregnancy health information
Frequently Asked Questions (FAQ)
When does the third trimester start?
The third trimester starts at 28 weeks of pregnancy and continues until the baby is born. A full-term pregnancy usually lasts around 40 weeks.
How often should I feel my baby move?
During my pregnancies, I noticed that my babies were usually more active at certain times of the day, especially at night. I learned their normal movement patterns, which helped me notice when something felt different.
Every baby has their own movement pattern. If you notice a significant change or reduction in your baby’s usual movements, contact your healthcare provider for advice.
Is it normal to have Braxton Hicks contractions in the third trimester?
Yes, Braxton Hicks contractions are common during the third trimester. They are sometimes called practice contractions because they help your uterus prepare for labour.
If contractions become regular, stronger, closer together, or you are unsure whether labour has started, contact your healthcare provider.
When should I pack my hospital bag?
I packed my hospital bag around 35 weeks because I wanted to be prepared before my due date. Having everything ready gave me peace of mind, especially knowing that labour can sometimes start earlier than expected.
Conclusion
Every pregnancy is not the same. Some women may experience more symptoms, while others may have fewer symptoms and their third trimester may go more smoothly.
Those tired days, pregnancy symptoms, sleepless nights, and backaches may feel difficult now, but many of these discomforts will slowly disappear once your little one is in your arms.
Start talking to your little one, because your baby can hear your voice. Sing lullabies, enjoy these small moments, and create a beautiful bond before your baby arrives.
If you have a toddler, spend some extra time with them and prepare them for the new little member joining your family. Slowly start arranging your baby’s needs and enjoy these final weeks of pregnancy.
The third trimester may feel challenging at times, but it is also a very special journey that brings you closer to meeting your baby.
About the Author
Hi, I’m Bhavana, a mother and the creator behind Happy Mama Ideas. Through my own pregnancy journeys, I have experienced many of the symptoms discussed in this blog, including morning sickness, food aversions, and fatigue. I share practical pregnancy, baby care, and motherhood tips based on my personal experiences as a mother, along with information from trusted medical sources, to help expecting and new moms feel more confident and supported on their journey.
Medical Disclaimer
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or healthcare provider before trying any remedies during pregnancy.
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