Pap smears ARE NOT diagnostic. Pap smears only suggest whether or not a colposcopy should be done. Many times a pap smear will come back HGSIL and when the actual colpo/biopsy is done, there is nothing there.
'Almost' cancer is not actual cancer. High grade dysplasia is 'Almost' cancer. How long will it take to turn into cancer? A very long time. Not in the few months since you had your biopsy.
It sounds like this doctor is being thorough. But it also doesn't sound like there is anything to get overly worried about.
Remember, pap smears WILL NOT diagnose anything at all. Pap smears are only meant to see if you need further testing (a colposcopy and a biopsy). The only diagnostic test is a biopsy. Which you've had and it was clear.
Good luck! Try not to worry.