I'm so sorry you are suffering so much. You don't seem to get much support. We are here for you to talk to and give you support. There are people who have had a lot of experience and they can advise you so ask your questions. Probably someone will have an idea how to proceed.
I agree with everyone else that you should try to change your dr. and therapist.
You can only give what you have already so it's not selfish to look after yourself.
I hope you get the help you need.
Keep posting