If I were you I would call my local office and make an appointment, to go in. They go over the paper work with you and make sure everything is filled out properly. They can give you an idea how much you are entitled to, but the only way you will find out if you're qualified is to go through the red tape. The 1-800# only knows what you have filed. If there is no paper work they will only send you a lot of paper work that I think in your condition will probably confuse you. You can start by filing online at the ssa.gov site. There are so many factors that come into play, like if you're married, or if you have full work credits, if you have children. You are really lucky to be alive.. Good luck and take care.