I am not talking about regular birth control pills. I am talking about i-pill, a contraceptive pill that works for 72 hours. I had an unprotected sex at around 6 pm and then had an ipill at around 8 pm then had an unprotected sex after 8 hours of taking the i-pill. So the question is, do I have to take another i-pill? Or the one I had earlier is enough to prevent me from unwanted pregnancy? Please provide a detailed answer.