I have the opposite problem . . . wish I could give you some of mine. LOL. Have you had your thyroid tested? It's common for EndoWarriors to have thyroid issues. I also suggest asking your doctor to rule out autoimmune diseases, because those are also common in EndoWarriors. Obviously, eating healthy foods with good fats like omega-3s in fish, etc, is important. That helps regulate hormone levels. Hope you get some answers.

Oh, the low appetite is a big problem for me. I sometimes have it with the nausea and sometimes just on its own. I have to force myself to eat breakfast about 2-3 hours after I wake up. So I think my body is in starvation mode and that's why I can't lose. I try to eat, but it's tough, so I get that. I hope your doc figures something out.

See birth control helped my pain and it helped me eat more but theres still days I wake up and cant eat very well. So ill gain a bit then still lose it again.
I even try to count my calories to get to 1700 but I cant even eat that much. Lol Maybe you can try yourself setting a goal and strictly stick to it for 2 weeks so your body can get used to it then after it should become easier to eat healthier.

I am having trouble losing weight but when I was put on birth control I gained 20 pounds. (I am not on birth control now, that was when I was younger)

Yes of course I will!