My boyfriend and i had sex on August 11th and we did use a condom but unfortunately it broke and we found out after it was too late. without hesitation, we went to the nearest drugstore and picked up Plan B and i took it within 45 minutes to an hour after the sex on August 21st i got my period and it was just like a normal period and lasted about 5-6 days. i haven't had any other sort of pregnancy symptoms but i am still stressing out. can someone give me advice?