i just started on some imitrex for my headach during my periods but since i have taking the meds my period have stop and i dont know if the meds is doing it or is there something else. i hope it is not a bigger problem then it is. i dont think im peg, im 30 and never could have babies of my own. can some one help. i still get my headach at the time of my period but no period each month.