Are you filling a pad per hour? If so, go to the ER. If not, then it could be bleeding that many women experience about 7-10 days post-Leep. It was explained to me that the scabs are starting to come off and they bleed a bit.
I'm glad your doctors are going to continue to keep a close eye on you ever 6 months! I can't explain why your results are the way they are; they sound like good news, though!