Hello😀 I have had migraines and cluster eye migraines all my life. When I was younger I would always get the flashing in my eyes before the headache. My 14 year old has migraines now too🙁 he is complaining that the headache happened before his eye flashing. It's lasting about 45 minutes. He also had one about 36 hours ago and got sick to his stomach, which helped his pain. But why would he get the flashing after the headache?? And why two migraines within 36 hours?