Weight gain

I have always struggled to maintain my weight and was usually referred to as "thick" I was never huge but just weighted more then I would like and way more then the recommend weight for my size. Im at my 34 week check up right now and I just weighed in at 211. I've never weighted more in 178 and when I started my pregnancy I was about 173. I'm really struggling with the scale and my emotions. People just tell your pregnant not fat. Well in a few weeks when I have her I will be fat not pregnant. I have 40 days till my due date and everyone tells me you gain so much right now but geeez idk how my stomach is huge and I started getting stretch marks 2 weeks ago. :( I am just terrified I won't lose this baby weight!