Hi! I'm also awaiting biopsy results after my first abnormal smear. I had the letter saying high grade dyskaryosis, and was booked in for a Coloposcopy and LLETZ on the day. I had to have a family holiday and wedding abroad first which was great for taking my mind off it but since the proceedure I have now been waiting 3 and a half weeks for the results. I phoned after three weeks, and the receptionist said its still with the lab. So here's me thinking one minute, that's good, any bad results would have been addressed straight away, and the next minute, what if they are redoing tests to confirm something bad, or is my consultant away so she hasn't been able to phone with bad news. I know that doesn't help you at all but my advice would be to assume that if you didn't hear anything in the first week or so, that there's nothing they are concerned enough about to rush for.
I do have a close friend who has had three LLETZ, one cin2, one cin3 and another 1st stage cancer and she is convinced that the longer results take, the better they will be :-) I do hope you get your letter soon though, as I understand what a roller coaster the waiting can be. I have found that by planning something to do every morning, taking me out of the house around the time the postman arrives, has helped, and if you read through other women's stories on here, not one of them state that they waited three or four weeks before getting bad news :-) xx