Ruby,

This is all about waiting and we all hate that part of it. Tests take tiem and the time between tests are ment for the doctors to see if any changes are taking place(for better or worse.

I would follow your current dentisits advice and wait for the next test to tell tou if you need to have an ENT look at it. These light tests are very helpfull in diagnosing early symptoms but are not very precice. Only a biopsy can tell you for sure and you probably need to wait that 7 days to see if these spots either deminish or stay the same. If they are still there, check in with an ENT