Received pads yesterday

I received my 1st box of pads yesterday and although I didn't sleep very well I felt so much better during the nite. My head stopped its constant hurting and my balance and dizziness was much better. I felt great as I left the house this morning for work but about 2 hrs. after I removed the pad everything (headache, balance, etc.) seemed to be much worse than normal. Is this to be expected. I react to strongly to everything (foods, chemicals, meds, vitamines, herbs) should I start slowing and use the pads every other night?
Also, I will be doing a liver cleanse this weekend and was wondering if it is okay to use a pad that nite or should I skip?