Suggest Remedy For Pain In Backside Of Head

Hi! i had have fever and flu since last wednesday 4/6/11 today i only have the flu 4/11/11 but i have a pain for the last 3 days on the back side of my head the rightside that comes and goes every 5 to 8 seconds and it feels like someone is sticking a niddle in my head i cant stand it...now i am allergey to surfa and aspirin..what can i do to make the pain go away???
Thanks,
Benjamin