What are my "rights" (if any) as caregiver? How do I support myself?

I lost my job when my father had his stroke & I had to take care of him full time. My husband has also lost his job bc of this situation. My father has money to pay us for caring for him if he wanted to but will not. He also wants me to give money (1grand/mth)to my sister who has not called/visited since he had his & stroke (over a year) & he's already helped her by paying the downpayment to her house. I'm afraid I'm going to take care of him & basically be poverty stricken when he passes away, but I've already lost so much bc of this situation (money, job, had to sell my car to pay bills) that I really have nothing at this point. I feel like this is a lose-lose situation and I've become an endentured servant. my friends are telling me to leave and take care of myself but we have nothing in the bank bc we didn't know my father had money and paid for things for awhile- when I got control of his finances I realized that he had money and that we were being suckered. We sold our cars for money early after we lost our jobs and my father requires 24 hour care. Does anyone have any suggestions?