Anyone with a small bump?!

Fiona
I'm 20 weeks 5 days and I feel like I should be bigger... I look bloated... If anything... Show me your little baby bumps!!! I'm starting to wonder if I should be concerned.... 
-Anterior Placenta
-Baby prefers head by cervix, feet up..
- I've been wicked sick the whole pregnancy. Even now. 
Would any of this make a difference??