Confused🤔

I am taking antibiotics called Metronidazole and I am confused to why my period is late (my view 3 days late) Could my period be late due to the antibiotics I’m taking? I go back to my doctor on the 31 for post op for diagnosis of Endo but I am a little confused as if I need to call the doctor and ask or do I just wait till my period comes. Any advise.