Pregnancy and weight! Serious question.

Hello ladies! I'm currently 22n a half weeks along now and I've gained 19 pounds, I'm feeling like this isn't healthy and I'm just curious how much weight everyone else put on during pregnancy. I've noticed my back getting fatty, and my legs so maybe also some work outs that can work those areas with out straining my stomach? I know my boobs are the majority of it, I've went up 3 cup sizes already! My stomach isn't big at all, but my back, boobs, and thighs are what's doing it and I know it. So any suggestions helps! I haven't gotten into the OB here yet at my new location because god knows Triacre took their sweet time accepting my referral lol.