Hey mate,

I was also 20 when I should have been diagnosed. I went to the doctors 3 or 4 times over a period of months before i was sent for a biopsy. But I had an 'ulcer' or a 'sore' on my tongue. By the sounds of yours you don't, and if your Ct came back clear that's a good sign. If it is something it's still microscopic, but there's a chance it's nothing. My first pet scan showed activity in my tongue and some of my glands in my neck. I'd definitely get the second opinion if you're worried.

Good luck!

Dave