last night I was in a cool tub of water with a very mild headache. suddenly it went to extremely severe. I took 3 aleve before it went away just as suddenly as it appeared. I even went to bed really early last night around 11. slept until 10 am. I never do this. then fell asleep around 4:15 today. I never do this but lately I have been catnapping. any ideas? last night with the headache I was screaming. errrrrrrrr