Weight rant!

I am very petite to begin with, and the thought of gaining 25-35 lbs. scares the crap out of me, as being small has always been a part of my identity. However, I know gaining weight during pregnancy is normal and I'm just going to have to suck it up. However, I go on some of the other communities (WTE for example), and everyone is bragging about how they are 20 weeks and haven't gained any weight or how they've lost 10 lbs. It makes me feel awful that I'm only 15 weeks and have gained weight. I know everyone is different (and some people lose weight due to awful m/s), but has anyone else actually gained weight during their pregnancy? I'm feeling like a lonely whale. :-(