The days look less bleak if you can find mobility assistance. I really mean it. Get a walker, walking poles, or even a mobility scooter. Have many stops during the day to sit or rest. I found that lying face down with firm cushions under my pelvic helped to stretch my back. Also from a lot of the injuries I needed to sleep on the floor on a mat with pillows all around. It encouraged my spine to move into a position that helped.
It can be hard to accept the discouragement of daily pain and suffering entrapped at home. Your ability to cope so far is crucial and shows strength enough to build on your courage. Keep trying different things, talk to your Dr and local hospital for pain relief methods. Let them know you need help. If anyone can help to get cooking and shopping done say ok to the help and never give excuses for not lifting stuff. A lot o further injury occurs due to gardening and chores. Keep your mind focussed on better days that do come.