Suggest Treatment For Hyperhidrosis And Acid Reflux

HI. All my teen years I've never filled out in my clothes. I been worried about this for a long time. I just turned 17 and I have breast..but they are small. I am healing from a chocking phobia- it made me not eat. now im 120. i lost 10 pounds. But now that I'm eating, I still cant fill out. i been wondering if its my acid reflux. everything i eat churns and cramps in my stomach. i always get bloaded. I am very depressed in all aspects, especially when the younger people make fun of me or act like they are better just because they are more filled out. I also have hyperhidrosis.. I feel so different from everyone else. is something stopping me from gaining weight