First off, take a deep breath and try to calm down. You are probably getting all worked up for nothing, so don't waste a good panic.
I was diagnosed with CIN III in 2005 and carcinoma in situ this past February. I had laser surgery (under general anesthesia) in May. I've had two follow-up Paps since and they've both been normal. The success rate with LEEPs, laser, cryo, etc. is virtually 100%, so the chances of having abnormal cells left are slim to none. Were your margins clear? If so, I doubt you have anything to worry about at all.
And, if the worst should happen and you do have abnormal cells, ask for the Leep to be performed under general anesthesia or ask for laser surgery. I had no problems with recovery for it, in fact, I couldn't tell I'd had anything done.
Let us know how everything goes. I'll be saying a prayer that all will be remarkably unremarkable.
Big hugs from across the pond,