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Thank you all so much for your comments. There seems to be a lot of caring people out there! (I may have to change my profile pic tho', as I'm a woman and you all seem to think I'm a man.. lol)
I've just been back on to A&E and they're still telling me the same thing. They also say that there is no dental department, although as it's a university teaching hospital I find that hard to believe!
You're right whirlyhurly, I truly am at the end of my tether. I think I just may have walk into A&E and lie, tell them that it started in my cheek! We don't have a walk-in center that deals with gums in my local area, boxtops.. I've tried those too (via online enquiry). It amazes me how your mouth doesn't appear to be part of the rest of your body when it comes to health issues, according to the general medical fraternity. Good job it doesn't apply to every different part of your bloody body, innit?