So, I began my pregnancy at an average weight (5'7" and 135). I'm normally fit and active, pretty healthy eater. At 16 weeks, I was up 10 pounds, and that seemed normal. But now, just two weeks later, I've gained 5 more on top of that. I know twin pregnancy comes with a lot of weight, but 5 pounds in two weeks seems extreme. I've barely been active at all this pregnancy. Im just so tired and feel awful by the middle/end of the day if I do too much. So I really try to take it easy.