How long ago did you have the last LEEP? What did the lab report say? Have you had any other symptoms, such as bleeding, bad smell, etc? LEEP, unfortunately, does run the risk of infection.
If you have had this kind of pain since the LEEP, was anything injured during the process? Or does the doctor think this is an entirely different health issue? Have any other pelvic tests been done for diagnosis?
I am truly sorry you have been having pelvic pain, since this happened. Please get a copy of all of your lab reports so that you can see your initial diagnosis and follow each report to the present. Then get a different doctor, or at the very least, get another opinion. I truly hope you are able to resolve this so that you can feel better! There is nothing more discouraging than being in constant pain.