2nd trimester weight

Just been for my 17wk appointment and I've put on 10lbs since my 12wk scan! I barely put on any weight in the 1st trimester. I'm shocked! I know it's all for my growing baby but I've struggled with my weight all my life and I'm a bit gutted it's just piled on so fast. I've been eating healthily and no "extra portions". Although I can feel exactly where it's gone (boobs and bump). I'm trying not to feel down about it but it's tough. Does anyone else feel like a frump