Wildrose, have you tried epsom salts baths? Epsom salts can be bought in bulk: you need about a mugful, then soak for at least 20 minutes. Don't use soap till after the soak but you can put a few drops of lavender oil in it. Magnesium can be absorbed this way and magnesium in any form is good.
I would guess you may not be able to get in and out of a bath easily? I have some issues, which I solved by buying an in-bath seat. I can sit on the seat, which gets me half way down, then manouvre off into the bath, for the rest of the way. I then reach behind me and carefully lift the seat and hang it on the edge. I reverse the process when I get out.
If it is osteo in your hands, you could try Flexiseq gel. Don't get it from Boots - try Amazon which is miles cheaper. It is likely to provide some relieve in about 2 weeks. There are lots of natural products and pills, but some will clash with your meds, and also be expensive.
Regarding Tramadol, it is one of those evil drugs that BigPharma lied about. It is unbelievably addictive. It could increase your fatigue, but I would not attempt to stop it until you have built up your resources. It also acts as an antidepressant, so from that point of view it may help.
It's quite important that you do something about your situation, no matter if you can hardly do ANYthing. It helps you not to feel a helpless victim when you take some kind of action yourself.