Can you tell if you have conceived if you have unprotected intercourse one day and start your menstrual the next can there be a possibility of being pregnant?

If you have unprotected intercourse one day and start your menstrual cycle the next day, it is unlikely that you are pregnant. Menstruation typically indicates that an egg was not fertilized and the body is shedding the uterine lining. However, if your menstrual cycle is irregular or you have other symptoms of pregnancy, it may be worth taking a pregnancy test for confirmation.