Thank you so much SingingTunelessly - I have Pm'd you back.
And thanks for all others messages of support.
SharonGless - I think you are right about going to the docs and, following SingingTunelessly's info, I have decided I will go and have a chat (unfortunately can't do it until next week because of work commitments this week).
BIWI I need to chat to my doctor first and if it turns out it's not a medical problem then I would appreciate help going through my food with a fine tooth comb. But I think I'll still carry on with this WOE as at least I eat quite well and don't put on weight (well not significant amounts)!
But tonight I stray I'm afraid......
As for Mr BIWI - that melted my hardened heart [wipes away tear on your behalf]
And welcome to all new and prospective lc'ers. Despite all my problems I do believe this is a great WOE (let's not call it a diet!)