I am an amputee (result of traffic accident.) I don’t know where you live so it is hard to give advice on what’s available. Swimming is your best bet for keeping fit. A table on wheels that has sides (nothing falls off in transit) Keep bandaging your stump, eventually the swelling will go down. If you can eventually walk, forget the pain and realise the gain! I have been upright for 24yrs now. It took three years for my compo to pay for the accident and my prosthesis, if you need more advice email me. I am in Australia!There is a free limb scheme here.