Is it normal to have diarrhea during your period?

It can happen: But not normal, if this is the first time and u have already been having periods , more likely it is due to something else, if u have it every month only when u are on your period then can be due to teh prostagladins and if u were my pt once u had a GI workup to r/o problems i would do something to stop your periods, like continuoss bc pills or depo-prov or possibly lysteda.