Ashley, waiting a couple weeks will not change anything. A biopsy will determine exactly what you have in your mouth. It could be any number of things, hopefully its not cancer.
Try not to worry too much over this. Its been there for a couple years and hasnt caused you any problem. If it was cancerous by now there probably would have been some growth or health problems by now. Be prepared to wait about a week after the biopsy for the results. Thats why I am advising you not to fret over this, it will take several weeks until you know the results and you have other things (finals) to focus on. Besides, worrying has never changed a test result.
Wishing you all the very best with this. Please let us know what it turns out to be.
PS.... Tony its already been moved
