Talk to Gynecologist on Gynecology

Asalamoalaikum doctor, I am married since a year but not living with my husband as rukhsati isn't done yet so we both are meeting once in month only Although we try to be careful while having intercourse but still I get so depressed whenever my period's date gets late a day or two Kindly tell me any good tablet without any side effects for not getting pregnant.. Also we meet a week before my periods as always so please refer something which helps get periods asap after meetup. JazakALLAH