I had my second round of Botox a couple of days ago (to relieve migraines) and started a headache following the injections that went into a migraine (which I still have). The doctor said it takes a week or two to see if it works, but I didn’t expect a migraine after getting the injections. Is this part of the process? I know I’m very sensitive to everything, but I just didn’t think I would get a migraine from the Botox. The doctor says that my body is getting used to it and wants me to have 3 to 4 rounds because it needs time to build up in my system. Has anyone experienced this? Did the Botox eventually help?