Gaining weight and FTM

I'm a FTM and pre pregnancy I weighed 115 lbs, always have since I hit puberty. Now that I'm 22 weeks pregnant, I'm now 135ish, so about 15-20 lbs gained. It's been tough for me as I'm 5 ft 2 in and since I've always been a stable weight it's been incredibly difficult mental health wise (I already suffer from a plethora of mental health issues and have experienced anorexic behavior in the past) and I can tell it's bringing me down, although I know it's important for our little girls health to gain the weight.

Anyone else with me? 😐