UPDATE and question

As far as I can see, which is difficult as it is at the back of my mouth, there is still what looks like a lesionn there. The change in pain mentioned in my last post is quite strange. I don't get pain during the day, and the area is not painful to touch as it was. But in the evenings the part of the area which is in the gum under two back teeth aches (the teeth are fine, they were x-rayed and no abcess), my jaw under there aches, and I get some pain in the right side of my head, and sometimes in the ear. As I said this only comes on in the evenings.

I just find all this really puzzling. Keep wondering if I really need the biopsy which is now booked for early July. Any ideas?