I'm sorry you are going through all of this but it sounds like your anger is not helping. Hard to let it go, but you really have to. If I were to make a list for you about where to start, it would look like this:
1. Get your medical issues handled. Find a free clinic, there has to be something available at your income bracket (Obama care failed you?? That sucks, but there must be something you can do)
2. Think about moving away from your parents and how to accomplish that. Rent a room from someone who needs help around the house and will give free room and board maybe?
3. See if you qualify for scholarships for school. I didn't think your parents income applied at your age, but maybe I am wrong?? Look for courses somewhere other than a college, maybe through the local YMCA? Or offer to work part time for someone for free to get some training in a particular field??

I wish you all the best and hope things turn around for you soon!