Permanent virus?

I had several teeth extracted a little over 2 years ago (July 06), the dentist had to cut into my gums & jaw to remove one the the teeth because it kept breaking off.  I had major pain, his office just brushed it off as normal.  I few months later I was still having issues and pain.  I noticed some greyish-whitish spots on my gum which disappeared as fast as they appeared.  I can't remember the date, but I was diagnosed with thrush.  In May 07 I had a large abcess (abscess) with more of the greyish-white spots on the lower gum/jaw area near the extraction.  I punctured the abcess (abscess) which was full of greenish puss & blood, used water/peroxide combo to rinse and it cleared up.  This May there was a blueish spot but more toward the back & on top of the gum line - again disappeared as soon as it came.  By the way, the dentists I had been going to have no answer for what this is or what to do about it.  I just went to the doctor on Thur and she said I have "a" white spot on my throat -- since only one she thinks it is a virus because if there were more than one & my throat was sore she would suspect bacterial infection.  I continue to have pain in the lower area of my jaw even after a root canal.  ????? What is going on and what the heck do I do about it????