Pregnancy Belly Size By Month

Pregnancy Belly Size By Month

When it comes to pregnancy, a woman’s body can go through a wide range of changes. One of the most noticeable changes includes the size of her belly, which can increase dramatically as her pregnancy progresses. Wondering what to expect in terms of your pregnancy belly size as the months go by?

First Trimester: Weeks 0-12

During the first trimester of pregnancy, most women will find that their belly is not growing significantly. However, many women may be able to feel the baby’s movements inside and the belly will typically be the size of a small, firm basketball.

Second Trimester: Weeks 13-27

During the second trimester, many women will notice a significant change in the size of their belly. Belly buttons often ‘pop out’ as the uterus shifts upwards and the bump shape also becomes more distinct. At this stage some women may report feeling a ‘pooch’ which is created when the baby presses upwards against the lower abdomen. By week 27, the baby is typically the size of a large butternut squash and there is usually a noticeable increase in the size of the pregnant belly.

Third Trimester: Weeks 28-40

During this final stage of pregnancy, belly size will often continue to increase and gain definition. By the time a woman reaches week 37 her uterus will have grown significantly to the size of a soccer ball. By the end of the third trimester, the belly size will somewhat resemble a large watermelon. Women may also expect some abdominal tightness and skin itching caused by the stretching of the skin in order to accommodate the growing baby.

Can You Buy A Pregnancy Test At Self Checkout

Understanding Belly Size Changes

It’s important to remember that every pregnancy is unique and therefore pregnant women may experience different levels of discomfort and changes to their pregnancy bellies throughout the three trimesters. It is also important to remember that average measurements can vary greatly based on the individual.

Seeking Professional Advice

If you have questions or concerns related to your pregnancy belly size at any stage, it’s important to speak with your midwife or doctor to address any worries or discomfort. Pregnancy is a special, but also a sensitive, stage of life so it’s best to seek professional advice and guidance when needed.


No two pregnancies are the same and there is a wide range of normal bellies sizes, but understanding what to expect throughout all three trimesters of pregnancy can help you to ensure that your body is healthy and your unborn baby is growing as expected. If you experience any discomfort or have any questions, make sure to seek professional guidance.

Send this to a friend