I'm almost 27 years old and have been getting migraines since about the 5th grade. I haven't gotten a migraine in about 3 years. I got 20units of Botox injected into my forehead last monday. I worked out with my personal trainer Tuesday and Thursday, and day 5 of having the botox, after I worked out I got a migraine. Saturday I didn't work out because my headache was still somewhat there. I went to the gym on Sunday and got a migraine about 20 minutes after working out. My Dr. said there's no way the Botox is causing my migraines. I don't see what else it could be. Has this happened to anyone? I'm feeling upset because I want to go to the gym, but I'm scared of getting another migraine.