Belly question

Destiny • 1 baby boy 1-18-17

Today I'm 20 weeks and i swear everyday my belly looks different. Yesterday it looked like I was about to pop and today I look like I'm only 10 weeks pregnant. Does anybody else's belly do that? I'm not concerned I'm just curious if anybody's else's belly does it haha it's the weirdest thing!

Due January 10th 💙