A shot might be what is needed. I've gotten shots in my shoulders and knees. I haven't had issues with my shoulders for a few years now and I've only had the shots in my knees for a few months now. Seems to be working so far. For both knees and shoulders the doc told me that a shot is the cheaper alternative to scans and then possibly surgery. Shots don't work, we take pics and put you under the knife... I'm still worried about my knees. They're not in the best condition.
Enough with myself, here's my advice. Seek your doctors advice first. Then follow your gut. I would keep up with the stretches (maybe bring it up a notch or two). Get a foam roller and roll from your shoulders to your ankles. Your IT band could be pulling you down too. But I believe it could be every, or any, tendon from your neck to your ankles. There are a ton of youtube videos that you can watch for stretching and rolling. If in doubt with these, ask a TRUSTED professional. Next, lose weight and work out. Focus on working out your back (back extensions might be good if you can do them) and your legs. Building a little muscle and losing a little weight could have huge impacts on your body.
All this being said, I've never seen you. So this is just my opinion based on the pains and remedies that I've done and probably what I would do myself.
