Hey, lets talk about this for a minute. I'm sorry that your marriage fell apart, mine did too. It hurts and is sad, but is often a part of the price that ends up being paid to live an authentic life as the person that you are. I understand how awful it is, but I also understand that my wife thought she was marrying a man, and it didn't work out that way. Still sucks though.
If you are on SSI, you will qualify for medicaid. Once you have jumped through those hoops, and since gender dysphoria is a recognized condition, you'll be able to get, counseling, primary medical, and HRT medications for a minimal co-pay. Check it out, if you need some help contact a local LGBT clinic, and they will help and advocate for you. Housing is a bitch, but she can't just through you out without process. You don't have to just leave. If in your community there is a Gender Justice League or similar group office you can get some help in finding out what your options are.
The point is you are not powerless, and not alone. You are your best resource, I am here for you as are many others. To abandon authenticity is to despair of life, you are worth happiness, and worth living with joy as the woman you are. Never ever give up! Sometimes becoming true to yourself takes longer than it ought, and meanders through trouble, but together we are strong and together we will find the sunshine.
Hugs

Julie