Areilly, sounds familiar yet distinct.
I think most of us here are on 3++++ medications for this, that and the other thing, the weight thing is a given to most people, as we do not fit into what is considered the "normal" or "healthy" range, the doctors not knowing way back when, pretending everything was fine until finally the last straw broke and you have nothing left to hang on to. The cutting is familiar to me as well, it is like letting the pain out physically that cannot escape by any other tangible means.
Now you have found a way to express verbally to people who will not judge, who like you are experiencing similar issues, who have the ups and downs (way ups and way downs), feelings of being alone and anxious, and just about every other feeling out there.
Keep posting, keep checking the posts and keep going, you can beat this with a little help from your meds, friends, counsellors, and internet.
All my best and hope to hear from you soon.