... this month, I have been experiencing mood swings and am choosing to discontinue using the pill. My question is, I had unprotected sex on the last day of my period yesterday, and would be starting my pill today but am discontinuing taking the pill. Is this okay? Or should I take them and discontinue next month? I know sperm can live for 3-5 days, but I'm not sure how this would interact with me no longer continuing use of pills