Maybe they're not overly concerned if they're not making you get a biopsy. I had to do mine right away....cuz the knew by looking at it. I also "knew" in my gut. Why can't you ask that they do one sooner? It may calm your nerves.

SCC-tongueT3N0M0- IMRT 35times-1/07-3/07; along with one cycle of Cisplat & one cycle of Carboplat; weekly erbitux.finished all tx.3/07-supposedly gone. Recurrence 6/07. Age 31-non-smoker/social drinker. Devastated it's back.