I got hit in the head really hard the other day and my head wouldn't stop throbbing so I took some Excedrin. A while later my nose started to bleed and my head didnt feel any better. Not sure if the Excedrin and the nose bleed are are related, but my friend told me that Excedrin is a blood thinner and that you arent supposed to take it after you hit your head or it could lead to brain bleeding. Today my headache has been coming and going and sometimes I felt kind of nauseas.