Yes, it is possible to get pregnant if you had unprotected intercourse the day after your period ended. While the chances of getting pregnant are lower during your period, sperm can survive in the body for up to five days. If you have a shorter menstrual cycle or ovulate early, there is a higher chance of pregnancy. It's important to remember that fertility can vary from person to person, so using contraception consistently and correctly is crucial if you're not ready for pregnancy. Consider speaking with a healthcare professional about birth control options and reproductive health education.