I had an upper molar tooth removed three months ago, and the gum has not healed. I have seen the dentist several times. I had dressings applied and am on the fourth course of anti-biotics (Amoxycillin, Metronidazole, Amoxycillin, and now both together). None of these have made the slightest difference, though only been on the last for just over a day, so maybe too early to say. It can be very painful at times while at other times it is barely noticeable but has got much worse over the last week. The dentist is going to make an "urgent referral" to hospital if it has not cleared hy next week, and has implied that there is the possibility of something nasty, which she didnt go into and I didn't ask at the time -I think it has taken some time for this to sink in. I assume that the concern is some sort of cancer, and given the time scale at which the NHS is operating at the moment, I would like so have some idea of what the "something nasty" could be. I have had many extractions (sadly) in the past without any such problems. Any information or advice welcome. Thank you.