Talk to Gynecologist on Lose Motion During Pregnancy

in 27week of pregnancy, i have severe diarrhea about one full night atleast 10 times bathroom visit.. after taking ors i got relief during one full day, then again next morning 1 time more losemotion, but then whole day no bathroom visit, i also took flagyl.. now its 3rd day again at morning diarrhea hit one time. kindly give me instant reply and solution.