Hi. Thanks for asking in Healthcare Magic. i pill is not a substitute for regular contraceptive and should be used only as an emergency measure for accidental/ unplanned exposure. It contains high dose of progesterone and results in withdrawal bleeding within a week of taking the pill and that is the reason for the bleeding every time after taking the pill. Your wife should not use it so frequently as it can result in many serious complications like breast cancer if used too frequently. If you don t want her to conceive then you should opt for regular contraceptive method like oral contraceptive pills. A duration of one week from the first day of period is relatively safe period. Similarly one week before the expected date of period is safe. The ovulation occurs only 14 days before the onset of period and a period of one week on either side of it are safe. But this is a very crude method of calculating the safe period and may result in unwanted pregnancy if not calculated properly. Also during the initial months of marriage, the periods may be irregular due to both emotional and physiological factors. Hence it is wise to start a regular contraceptive method to prevent pregnancy after consulting your treating Dr. I hope this is useful to you.