Headache time!

I have been getting constant, persistent headaches daily which are not responding (at all) to OTC pain medications. Ow. Am going to the doctor tomorrow to try and take care of it. I just took a nasal decongestant (pseudoephedrine, w/ 500mg acetaminophen in an attempt to kill the pain) and find it quite stimulating. I wonder if it feels different then normal ephedrine.