KMD,
I agree with your process. A biopsy will tell you exactly what the problem is. We all say here that it is not cancer until the biopsy says its cancer. Try not to worry, I know that's easier said than done, distract yourself. I looked at your picture I see you have an ulcer on your tongue. Like Jerry said it is impossible for someone to look at a picture and tell you if it is cancer and I know you know that.
In my opinion you are taking the right course of action.
I hope everything works out for you.
My thoughts and prayers are with you.
Cheers,
Mike