Scared & optimistic

I'm terrified & maybe it seems silly but for YEARS I have had trouble with my weight. When I was 19 I was diagnosed with a Pituitary adenoma. I gained a lot of weight that year. Some told me that the adenoma had no affect on my weight while others would say that it would. It makes me sad still to this day, that some of the closest people around me made me feel horrible about myself. I was told I was called fatty behind my back & that I was just eating too much. For years I lived with shame. Finally I became numb to all the names and I started liking myself for who I was no matter what. Then I was diagnosed with Hashimotos. When I saw my doctor she told me that absolutely both the adenoma & Hashimotos affected my weight. Now I am scared. I had accepted that fact that I was over weight and I tried to love myself, and now I am being told that I will loose weight and start to have more control over my life, but looming in the back of my mind is the question,"But what if I don't?" I don't know fir sure & then will that give those people & their hurtful words and gossip more ammunition if I don't drop weight. This is what I know: I am sure that this is a process and that everything won't change over night but will there really be a change. I am so scared. I just want to be better.