Thanks for the replies, theres a really nice bunch of people who post on here. !!
Another visit to the docs and he is still happy i'm physically healthy.. I have to say my GP is excellent, he always takes me seriously but does not pander to my OCD/anxiety, he explained a whole raft of my symptoms can be blamed on hyperventilation, and interestingly I found this on the the internet, obviously i'm no expect but Its quite refreshing to read..