Dyskaryosis server confused???

I had 2 posstive HVP test no cell changes then 10 months had my 3rd smear HVP posstitive again and server dyskaryosis.....that I had a call from the hospital as soon as they received the results on screen booking me in for colposcpy 6 days later before a letter was even released. My concern is one how can it get that bad in 10 months no cell changes to server....also is there a chance they could be wrong? I'm due to go in Monday but sadly due my period so they may have to prospone it till after as they need full view of cervix for this one...