Please has anyone had this early on?

♡gem

I am talking in the first 3 weeks or so of pregnancy.

I have suddenly just had 30 mins worth of the worst cramps, that literally made me curl up and cry and then 3 big bouts of diarrhea all in the space of 10 minutes.

My belly hurts so bad.

Is it normal to experience diarrhea early pregnancy?

This is my third but I've never had this before so this is totally freaked me out.