I would definitely start off with applying for disability. Whatever appointment you need can be done via video chat if you're in lockdown mode.

Once you have your disability income, find a place to live. Maybe start off staying at a Transition Home as they may be able to prioritize you for housing for people with disabilities.

Apply for low income housing. It'll take a while to get into a place but now is a good time to put your name on lists, somewhere.

Do you receive an allowance from your husband? If so, start stashing some of it away.

At some point, later on...

Contact your bank and see if they can help you rebuild your credit. Do you still have active credit cards under your name?

I don't know what to suggest about your teeth. Have you thought about GoFundMe website? There are many kind people out there who may be willing to help you pay for dental work.

Keep looking for a new doctor. Don't give up! You're health is important.

Lastly, find something to lift your spirits. You are undoubtedly going through a lot and I know it can totally cripple us when being burdened with a heavy load. Make a list of things you can do for "you" .. like daily bubble baths, adult colouring books, a walk around the neighborhood, special tea.. step back into your shed and relive a possibility.. anything to keep your mind positive.

Do you have any close friends?