Pregnancy symptoms?

Hannah
I expected my period yesterday (5-2) and it didn't come an hasn't came today. (: I fell asleep for about an hour and woke up with horrible cramps, went to the bathroom thinking I was starting my period, instead had a very upset tummy and TMI had diarrhea. I never have diarrhea and idk if it could be a pregnancy symptom or if I'm getting sick. 
​Anybody think this is a pregnancy symptom or am I possibly getting sick? 
​Thanks.