Diarrhea during Your Period?

F E S T
 When my period begins so does the pain and almost instantly I begin to have severe diarrhea , i just found it very strange and i did some research and i read that digestion Is messed up during your period but  It's completely normal . Its Prostaglandins- ( aka the pain hormone) 
and it happens  when your progesterone  is high , Progesterone is the hormone that increases immediately after ovulation and decreases slowly until its levels drop enough to trigger menstruation, and 
once menstruation is triggered, chemicals called prostaglandins are released . 
If anyone else is having this ,what do you do or take?