Small bump?

Jess • soon to be first time mommy - 2016
I want to have opinions from you ladies. Do you think I'm small or regular size. 
Im 21 weeks and 3 days in the first photo
Now I'm 22 weeks and 1 day today. So five months and two weeks. Everyone says I look small. No one can tell I'm pregnant when my shirt is down. Anyone felt small then popped out of nowhere? If so, when. I'd love to know!