You shouldn't still have cramping, bleeding, or discharge. If you are, you're definitely having complications. Please have it checked by your doctor, or by a different doctor if you are not comfortable with the current one. I had problems, too, for three months. Pain sitting down, nonstop discharge, etc. It was very disheartening, and it didn't help when I learned other women have had the same problems. But I had chronic cervicitis, and so LEEP was wrong for me. When I got ahold of a manual instructing doctors on LEEP, it said to not do LEEP until the cervicitis had been addressed.
I'm surprised your doctor told you to not come back for six months. Mine had me come back after a month to make sure I was healing properly. (A corner of the scab pulled loose, which more than likely accounts for some of my complications.) He then told me to come back three months after that as a follow up. Please fire your doctor and get one who takes your health more seriously.