I am a 44 year old male, 5'7" - 220 pounds, work out 5 times a week (mostly aerobic - jogging), just completed half marathon last weekend. I woke up this morning around 0100 with a severe headache and nausea. I eventually did vommit and took 2 excedrin then buried my head in pillow. Hard to go back to sleep but did. Woke again with headache and mild nausea. Migraine, Stroke? I know...go to a doctor, but all full and don't want ER.