Hello OP, I have been living with similar symptoms and chronic pain for a long time now... I have been diagnosed with hypermobility syndrome and multi-site osteoarthritis which is severe in places... After a few really desperate months, my pain is now much, much better, and some of the things that help most are unexpected... So I'm just sharing some ideas of things that have helped for me and might be worth a try...
Heat. Wheat bags help a bit, hot showers help a bit more (I can't have a bath because I can't get in/out), and saunas and jacuzzis help hugely. Most of my pain just goes when I am in the sauna or jacuzzi, and if I can spend long enough there (over an hour) the effects last for a whole after I get out. :)
Exercise. It is really hard to exercise when you're in pain, and I can't exercise at all on dry land at the moment, but I am swimming 4 times a week... I've built up from 10 to 25 lengths, and my general pain levels have dropped a lot. I'm combining swimming with sauna/steam/jacuzzi, and the combination of heat to relax my muscles, then exercise, then heat again works well for me.
Breathing/mindfulness techniques. These help a surprising amount. I think that I tense against the pain, and hold my breath, and this amplifies the pain I feel. Breathing/relaxation exercises help release some of the tension and so lower the pain.
Drinking water. Just water, not tea or juice or other liquids. I find that if I drink under 2 litres per day, my pain rises significantly. Apparently, dehydration badly affects the fluid in your joint, and makes inflammation worse.
Good luck with it. It will get better.