8 weeks preggo and 4th day of (sorry) diarrhea..

Something has happend to my stomach, I am not sure it it's okay., or I should run to the doc office with such a delicate issue. After every meal-I need to go to the lady's room right away..  Just did Pap test few days ago -everything is fine.  But it's just a bit annoying. I started to eat yogurts in order to help my colon to handle it, but no luck yet..