I'm sure that you have dealt with this problem long before reading this, but for anyone experiencing similar problems, I would suggest moving the appointment with the surgeon to an earlier date. The first rule in my practice is "no pain". I learned long ago that people do not like pain and...
It looks like it is healing well. I can be a piece of bone graft material trying to work it's way out of the gums. That's normal and can happen within the first few months after having a bone graft placed.