No means to take pills now, because Birth control pills
should be taken within 72 hours. More over, You had relation in safe period of menstrual cycle. First 7 days of menstrual cycle and last 8-10 days are probably safe for most of women (it may vary), so don't worry, wait for menstruation, many factors affect for delay. If menstruation don't start within 7 days, then do UPT at home.