Can Bump Size Fluctuates?
The amount of amniotic fluid can fluctuate throughout pregnancy and even hourly. At the beginning of pregnancy your body is producing most of the amniotic fluid. However as your baby grows they are producing more fluid through urine and lung excretions meaning your bump may change in size.
Come-And-Go Belly One day you look like you're pregnant and the next day your belly is completely flat. Just as quickly as your belly appears, it disappears.
Pregnant Belly Stages: Size, Shape, And What To Expect - Mustela
Your stomach is constantly expanding and shrinking to accommodate your food. You can't consistently change its physical size by eating differently or in really small amounts. For example, not eating won't cause your stomach to shrink over time. And eating small amounts of food won't “shrink your stomach” either.
Can You Shrink Your Stomach and How Long Does It Take? - Healthline
Why does my baby bump get bigger and smaller?
Strong abdominal muscles mean a growing uterus is going to stay closer to the core of the body, Kirkham explained, making a bump appear smaller. On the other hand, if core muscles have been stretched out from a previous pregnancy, a second or third pregnancy baby bump may look larger.
Baby bumps aren't the same size — here's why - Global News
Why is my pregnant belly sometimes big and sometimes small?
When you're housing a baby, placenta, cord and fluid, your internal organs have to fit somewhere. As the uterus grows, the intestines can be pushed behind it, making your belly look very round and 'all baby'. Or your intestines might move to the sides of your uterus, making your belly appear big and 'to the sides'.
7 Reasons Why Belly Size Doesn't Always Equate To Baby Size