Aaargh

I seem to have buggered up my shoulder. Last Monday's feeling of being hit repeatedly with a rubber hammer has turned into something much more localised and painful. I think I may have pinched a nerve in my left shoulder. I had trouble sleeping last night despite rather massive amounts of Ibuprofen and on a couple of occasions I lost feeling in my left hand. It's still just a bit tingly. I'm not absolutely sure what to do about it. I doubt that there is anything a doctor can do and I don't currently have a tame physio and wouldn't be able to afford more than a couple of visits if I did.