###Human: Will taking emergency contraceptive pills after unprotected sex cause any issues? ###Assistant: Hi. Plan B is an emergency contraceptive to be taken in case of male ejaculation inside vagina. If you have already taken the medicine, nothing much can be done right now. I hope you have attained menarche, so then you should get your periods in the next two weeks. The next period might be a bit irregular due to the pill effect. If there was no ejaculation or pre-cum, there is no chance of pregnancy.