Thanks for all for all your help.
In recent weeks I have educated myself via internet, reading all I could find on cold knife/cold/electric knife/LEEP biposy.
What turned out, according to abstracts from medical journals, the differnece btw using knife versus loop is in the size of cut and piece that is taken out. That is the greater the cut, the bigger the removed piece of your cervix, the more greater is the risk for complications (like infection, bleeding, difficulty to get pregnant and keep pregnancy etc).
Also, unfortunately or fortunately, I don't know, with my diagnosis (CIN III), the method used in this country is electric knife colonization.
I did ask my gynecologist why did she not take ECC and whether the lesion exceeds to the canal (endocervic). She said, yes, she could see that with colposcope.
The bottom line is that in my country, they don't do ECC. She said that in any case, with my diagnosis, CIN III, suspected carcinoma in situ (not confirmed by any lab repost, as biopsy report read "moderate-severe dysplasia, CIN III, although I admit it cannot be excluded, it can be excluded only after the affected area is removed and histologically studied), the only method recommened and used in this country is knife.
I really must trust doctors, because I have no education to judge how huge the affected area is etc.
In the end of the day, I decided to go ahead and do it by electric knife. I just understand (after talking to 3 gynecologist and one GYN/ONC that in my country, the practice is:
1. not do ECC (colposcopy and exocervical biopsy is considered enough)
2. they all recommened knife colonization as more radical method
After studying in internet the difference btw LEEP and electric knife colonization, I formed an opinion that if i tell my doctor that I want to have children and ask to remove as little as possible, that is the most I can do in my country.
Perhaps in the US it is different, obviosly it is. But here, doctors say that they prefer more radical methods, because their 1st goal is to prevent cancer, and ability to maintain fertility is secondary.
Therefore, LEEP is done only with mild or moderate dysplasias.
PS I had two years ago ASCUS, and my gyn (different one than now), did not suggest me to do HPV test, or repeat PAP every 6 months. My current severe condition (CIN III) could have been avoided if doctors would do they job and inform me earlier. They did not. They let the condition to develop into serious one, and now they urge urgent colonization!
Unfortunately, I have no choice now, though as one can imagine, I am rather bitter. If I had know as much as I know now two years ago, I would most likley not be in my current situation (operation in two days).
But, the moral is - always learn yourself about your medical condition, spend time, effort. It is not wasted, even though you may have to follow the original plan offered by your doctor, but at least you will be aware what is possible and where you exactly are and where you could end up.
Good luck to everyone, and hopefully our lessons are not too hard :-) Wish we all will cure and put it behind us.