I'm new to all this looking for some help

Hi

this is the first time for me on here my first smear was when was I was 19 I am now 21 from being 19 all my smears have been abnormal CIN3 or CIN2. I have had a loop byopsie done 5 times now. However now I find my self worrieying all the time and just waiting for my next letter threw the door. what to know is how many more times can the keep performing this treatment? 

Any comments back I would be most greatful thanks. X