a little TMI help

so the last couple days I've been having some slight diarrhea but this evening it was bad! like watery and I almost didn't make it to the toilet in time!! I'm a little worried, is it normal? I'm 8 weeks 2 days! I hear of women being constipated but I don't know about diarrhea.. anyway, has this happened to you? if so what helped? any experiences or opinions are appreciated!