I have been experiencing headaches for the past few days. I don't know why, maybe because of the hot weather. My headache isn't like any headache I had experienced. I mean, I can feel my head beating, like it has pulse. So today, I felt it beat, and it was painful, after that a clear yellowish liquid ran out of my nose. It was not like mucus, 'cause it just run like water. Plus, it doesn't have a smell.