Hello, I am in need of some help please.  I am 35 yr old female.  Over the last week I have been having a really bad headache all over my head, most the back of my head.  My body pulsates constantly in rythym with my heart.  I feel somewhat nauseated and my legs ache once in a while.  

I have been to the ER and had a head ct, and ekg, and blood tests.  All have been normal.  I have hypothyroidism which is controlled.  The only thing they told me at the ER is that I probably have a really bad migraine headache and gave me pain meds.  Its been a few days since then and I still feel the same if not worse.  Does anyone else have any experience with this?  I could really use some help and answers.