Thanks all.
We did biopsy today, waiting anxiously for the result, hoping it is ok.. we have 2 different doctors treating us, one is head and neck surgeon who helps us in the pain management thingy during IMRT (ulcers are unbearable) and the oncologist who did the the radiation treatment.
So now the story is oncologist wants to do chemotherapy without knowing what is that bump is (even though he is going to do CT Scan in March). During our regular check up with the surgeon today, he made on table decision to perform biopsy and send it to the lab. So here we are now waiting for the results.