Does anyone ever experience REALLY bad headaches with their anxiety? I didn't use to but lately I get TERRIBLE headaches that last for days. Sometimes weeks. Its like an intense pressure all around the head but mostly in the back and sides, not so much the front of the head. Its starting to scare me, like I have a brain tumor or something. Gosh, if its not worrying about my heart, it now has to be worrying about my brain!!! Anyway, please let me know if you have anxiety and suffer massive headaches! Thanks.