You can get pregnant from unprotected sex immediately after your period ends, especially if you have a short or irregular menstrual cycle. Although the likelihood is very low, pregnancy is possible even with sex during your period . Although most people don't ovulate during the immediate post- period phase, your chances of conceiving during that time aren't zero. Sperm can live up to five days in fertile cervical mucus.... We would like to show you a description here but the site won’t allow us. Discover if you can get pregnant after your period , the factors that influence fertility, and how to track your ovulation for better family planning.