I had a back stimulater put in 08/24 and since I have had a headache I had a brain tumor removed last year it was not cancer

This is not an appropriate question for online, sorry. There is a huge amount of history to know about which your doctor already has. Put in a call to his or her office in the morning and tell the desk the symptoms. Take Tylenol today (if that's OK for you in general) and rest.