Thanks for the advise Sharon and Lablover.
I am taking your advise on board and I have increased my water intake and trying to eat more healthily. My diet isn't too bad as it is, but there are ways that I could improve it.
I went to see the doctor he has give me a sick note for 2 weeks off work to try to rest and has taken bloods, they said they are giving me a full MOT hopefully find something not sinister.
Get the blood report Wednesday 12th oct sorry its taking me a while to reply.
Chris.