Hello Emanuele
Thank you for your reply - I will try to give some more info and answer some of your questions
I have found it difficult to pinpoint exactly when this problem started. At first it was just a minor inconvenience - a slight tingling in my left back / shoulder which although I noticed, didn't really bother me too much. I am pretty sure that it was the body pump session that started it, but cannot be definite. I did not notice any sudden pain during the session, but my left shoulder did literally give in during the chest track and I tried to force on rather than give up. I am pretty sure the problem started after this.
It is definately only to the left side and it never moves to the right. It is slightly further down the back than being on the top of the shoulder, but definately to the left (not the middle or the right). The feeling is not constant - I used to feel it when I went to the gym and did any exercise involving the upper body (press ups etc) so have completely stopped now. Funnily enough it is at its worse when I am sitting down, not even exercising it - eating dinner at a table, typing on my computer, or sitting on the train going to work. I have not really found anything that particularly makes it better or worse though (other than what I have just mentioned). I would not say it is any better or worse in the morning, but it does not seem to hurt whilst lying in bed (only sitting or standing).
There does not seem to be any radiation elsewhere - it is a fairly constant position but difficult to pinpoint exactly as it is quite a wide area (About the size of a hand maybe).
I havent got any other symptoms and no shortage of breath or palpitations. I think I am fairly fit - I do exercise about 5-6 times a week (cycling, and aerobics) and up to recently (stopped due to this) bodypump too. I don't smoke or drink.
I will check out your suggestion of the teaching clinic. The reason for the 6 month wait is that I am with the NHS - my doctor said I could get seen a lot quicker at the same clinic if I went private, but sadly I just can't afford it.
Please let me know if there are any other questions. Hopefully I will be able to see someone sooner as I dont want to give things up uneccesarily, yet dont want to continue things that may be making it worse.
Thanks
Jonathan