pregnant & anorexia

Dakota • 22 • Pregnant with 🌈👶🏼 #1 due september ‘18 • mommy to 4 angels 👼🏼
At age 14 i was diagnosed with "anorexia nervosa" i got in an institution for girls with eating disorders. I had been there for about 6 months when they said I was "good to go". They also warned my parents that I would always be struggling, especially at times of sadness/grief & anger. I am now a 21 year old woman & 8 weeks pregnant. I feel blessed & I love this tiny little bean so much already. But I do struggle again. I am obsessed with my scale & i weigh myself 3-4 times a day. I do not want to gain too much weight. I am so scared I'm going to become fat! But other days I realize it's all for my baby & it's health & that is a priority. I just can't seem to control those "negative" thoughts of gaining weight. I have my first u/s tomorrow & I will be talking to my doctor about this. 
 I was wondering if any of the woman on Glow have had the same? & how they managed it. I'm scared to gain too much weight, but I do not want to cause my baby any harm!