Body Image Struggle During Pregnancy

I don’t know why I’m here. Maybe I need to vent, maybe I need advice, I don’t really know. But I am struggling tremendously. I have never felt this overwhelming feeling & I don’t know how to handle it. I got married 4 years ago & was in the best shape of my life. Once I got married, I just fell into the swing of things & we went out ALL the time & are such a fun couple. Well I started putting weight on. Since I got married I’ve put on about 50lbs. We were going to stop trying to conceive & I was going to work on myself & get back into shape. WELL I got the best news of my life & found out that I was pregnant right before New Years. I’m currently 15 weeks pregnant & CONSTANTLY gaining weight. I’ve never felt so miserable or huge in my life. The changes that my body is going through is terrifying & I don’t feel like myself. I’m starting to get stretch marks & don’t want pictures of myself nor do I want anyone else to take pictures of me. I don’t know how to get over this slump. I HATE the way that I look & when it comes to food, my thought lately is, “this meal won’t kill you, you’ve already gained this much weight”. I’m miserable! I don’t know what to do or where to turn. Is this normal? I’m feeling so depressed & ive never felt this before.