Second Colposcopy in need of advise

Hi there I'm 28 and just got back from my follow up colposcopy appointment. On my original appointment it showed I had CIN 3 and moderate CGIN. I had normal margins with my LLETZ so just had my 6 monthly follow up appointment today. My doctor seemed shocked that abnormal cells had returned so quickly and advised it looks like CIN 3 but couldn't be sure. She has taken 2 biopsies and tested me for HPV (I'm not too sure if I was tested before?) She mentioned that they might not be able to perform a second LLETZ and that the consultants will look at all my notes and photos once the results have come back. I'm waiting for my results and would presume that if it was anything serious I would have been treated there and then? Just a bit nervous about the results.