A couple of months ago I was doing manual work at my job, and the next morning I woke up with a funny pain in my shoulder blade, like I'd slept funny.
I went to stretch my back out and ended up in real, sickening pain stretching past my shoulder blade and into my neck. It was so bad that I was prescribed diazepam and signed off for 2 weeks.
Now, I still get pain and it's kind of in my top left back, sort of behind my shoulder blade. If I rotate my shoulders in a shrugging, round and round motion, it clicks like mad!
It isn't hugely painful, any soreness is alleviated by massage or a warm bath. I'd be grateful for anyone who can give me any insight into what I've done here! 

