###Human: My girlfriend did not get periods after taking Unwanted 72. Why? ###Assistant: Hi. Firstly, I would like to inform you that taking an I-pill will not cause periods. The periods will come at its own time, maybe slightly late too. Delay in periods after I-pill is a common and expected side effect. Secondly, I would suggest you not to take more than one pill a month as one pill can cause serious hormonal changes. Also, it is best to take it only in emergency. Casual and frequent use can cause long-term problems. For further doubts consult an obstetrician and gynaecologist online -->