can flagyl or clindamycin cause your period to delay?

Meagan

I am 6 days late and it throbs down there and still no period. I know I'm not pregnant because I haven't done anything in two weeks amd.plus I'm not trying to conceive. My ob/gyn doctor has me on clindamycin for bacterial vagnosis to take one twice a day for 7 days since flagyl wasn't touching it. My question is can one of the two medicine cause period delays?