No, I have migraines, go to your doctor get a GP letter or a phone call, going to your schools head of exams and speak to them. To cut a long story short, i can't spend prolonged time staring at a scene and i take media studies so I have more time between extracts and can leave the room when and if needed. Talk to your teachers, you can get an extra 1% - 2% for a headache on the day but before any of your other exams and you might even get extra time, if you get a referral to neurology at your local hospital you might actually get a letter sent to the exam board, it is left in their hands but they might be nice and give you extra marks, subjects like music and languages this is key, my ears zone out during some headaches so you might sit in a separate room for these exams also with extra time between the playings of the track etc