My thyroid has five 1.5-2 cm nodules, blood work comes back with low thyroid and high platelets. I have had a persistent headach for weeks, I m dizzy and have some brain fog/confusion. I have a biopsy scheduled in 3 days, but the headache is killing me. My dr perscribed midrin for the headache, which helps a little. I am getting very concerned about he constant headache. I am wondering if this headache warrants a trip to the emergency room?