Cry at night symptoms and conditions

I am 19 years old and I recently was taken off of it 2 years ago when I switched doctors. Prior to the switch I had been on it for 16 years. I prob have some of the worse side effects. Because it causes an increase in appetite I ate but I didn't eat all the time, and I ended up gaining over 100lbs. I have a black-brown ring around my neck and for the longest time I thought it was dirt that wouldn't come off so sometimes I scrubed my neck sometimes to the point that it was raw.I have bad acne on my back and its just horrible.I cry every single night because of the side effects.I just want to know if anyone on here can help me.