Had Dysport injection to forehead above brow & between brow a week before upper bleph & brow pexy surgery. This was my first time to have any Botox type injection. 3rd-4th day after injection I experienced mild headache with heavy tired feeling in eyes with some blurry vision. It seemed to resolve 1 day before the surgery. Now, 8 days after surgery I've started having severe headache & fatigue. Not running any fever, incisions healed well with just minimal swelling. Will headache ever go away?