Had an unprotected intercourse day before yesterday. My last periods was on Jan 27. As per calculation it was the time if ovulation I guess. My husband took out the penis before the sperms come but having a small doubt that a drop might have gone inside. We don't plan to have a baby now. Consulted a doctor for emergency contraceptive pills. She asked me to contact before two days of next period. Is it ok not to take pills till that time?