Because of your medical condition, it would not be safe for us to speculate about what kind of exercises you can do. I would recommend talking to your doctor about what exercises are safe and what you should avoid. They might even be able to refer you to see a physical therapist who can design a set of exercises specific to your needs.
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."