When I got my second dose, it was at 8:30 am. The whole work day after that was fine. At around 6:30, I started feeling really tired and actually passed out at 7, missing the college basketball championship game and Sox game in Seattle that I was looking forward to watching. I woke up at 3:30am with a migraine, took some advil, woke up about 4 hours later with still a headache, and then took more advil. The migraines came and went for the next few days. Work was rough that week.