Hi I Was Pregnant Of 36 Days. I Went To

Hi i was pregnant of 36 days. I went to doc, she suggested me to have a tablet. I ate the tablet at the very next day i got my periods but i did not get properly as usually am getting like. I had my periods for 4 days. Doc told me that i will bleed heavily but i.didnt get anything like that. I again went to doc today, she suggested me to take zitotec 200. I just wanna know whether i can take it r not.