Dr. Clark's protocol uses three herbs and a zapper--no ozenated anything nor does she have a 'mop-up' program. You haven't been doing her protocol---so please read her book, 'cure for all diseases, and actually do her protocol before you say you have.
And yeah, the ultimate zapper is one of the bad zappers. You shouldn't feel anything as you zap, but you may start to feel sicker as the day progresses as the infections of the dead parasite settle into your body. But never anything painful.
So absolutely don't use that zapper again. It's harming you if you feel it that much. Killing your frequencies, which will kill you.