I recently had a severe migraine over the weekend with nausea, throbbing pain, lethargic along with a low body temperature. Finally went way on Sunday night. I felt fine yesterday, but today I'm feeling lethargic again with a headache, but this time my head hurts on the top of my head (like a stabbing, burning feeling). I haven't taken anything yet to see if it will go away or not. Is this a reaction from the migraine or a tension headache? I'm currently at work now, so not sure what I can do about it.