WHAT! 20! OH NO

So I'm at my Ob appointment 2 weeks ago and I have gained weight really fast this pregnancy. Each time i go in its a big difference. So then I'm at the gym yesterday and i decide to weigh myself to see how much i gained so far..... 20.. what.. 20 pounds. nu uh lol oh dear. I don't feel like i have gained that much! I don't think i look it.. maybe i do maybe everyone else notices it lol. I am 15 weeks along this coming sunday. I think the big thing is i onyl weigh 98 pounds normally so my body is making up for the fat i need really quikly. And lets not forget i have gone from a A cup to almost a C cup... so i know where most the weight is! Anyway quite the shocker. I'll be posting a before and now pic, ket me know what ya think.