How can I get paid for caring for my disabled husband without giving up all assets?

5 1/2 years ago my husband had his right leg amputated due to diabetes. Since then he has had 2 way heart bypass and been hospitalized twice for cellulitus. He weighs over 350 pounds and is frequently incontinent of bowels and bladder. does he qualify for nursing home care or am I expected to care for him till I am mentally and physically disabled myself