Yup, I had this done for Mild Dysplasia. I had moderate but cryofreezing got it to mild and since I had moderate they wanted to make sure they got rid of everything.
I had it done once with a repeat pap 6 weeks later. Every 2 weeks sounds harsh to me especially since nothing came out of the biopsy. I would probably get a 2nd opinion.
Anyway, they spread this stuff on your cervix, and let it site for a little bit, like 5 minutes. To me it was very painful and I was cramping very bad, but the dr's were very surprsed at that. They had done it many times before and it wasn't supposed to be painful. Anyway, after about 5 min or so (can't remember the exact time), they add a neutralizer to stop the acid. YOu have some discharge for a little while and that is about it.
I would take a few advil before the appt. HTH .