Help?

an

When I was around 8 my mom put me on some kind of medication (I don’t remember if it was for ADD or ODD but it was one of those) that made me gain a lot of weight. I stayed on that medication for a couple years until my father could convince my mom I didn’t need it. As soon as I got off the medicine I lost at LEAST 40lbs in only a few months (estimating) during that time though, Luckily I don’t remember a lot of the bullying, but it must have left some serious scars because to this day I can’t stand seeing myself gain even a little weight. Don’t get me wrong, curvy girls are absolutely stunningly beautiful. I just have an irrational fear of gaining weight myself. I’m worried it’ll cause an unwanted eating disorder, as I already hardly eat. Does anyone have any tips on how to prevent/get rid of that fear?

The pictures are me at ages 9, late 11/12(?) and 15 to show how much the medicine affected me