Do I have to repay food stamps and medicaid I've recieved if I get my SSI

Question Details:

I have been receiving medicaid and food stamps since having breast cancer and a heart attack almost 5 years ago. My SSI appeal is still in progress. I have recieved a form from the local welfare office to sign saying they are entitled to my first retroactive check (if I'm approved) can they make me pay all this back? Important Notice