38 weeks

And I've gained 50lbs. So sad about this and just really can't wait to feel pretty again. My questions are, 
-Does that seem like a drastic weight gain? 
-Does gaining so much weight mean your baby is going to be big? 
-And do you sometimes gain more weight with your first baby? 
My doc hasn't said much about my weight, she just said that baby is healthy and measuring where he should be. She did tell me to just try and eat more proteins than junk. Haven't really been doing all that good on that. 
I'm 22 & 5'1"