Need to know?

Okay so my period came on the 14th went off the 19th i had unprotected sex the 19th & my bf came in me so i need to know is it possible to get pregnant my cousin told me that her frnd got pregnant twice like that & ik it may be too much info but he din pull out till he was done so idk but i did research it on google & it said yes it's possible to get pregnant at the end of ur cycle it also said that sperm can live in u for 2 up to 3 days & you'll actually conceive 5 days later in ur early ovulatio so my question is did any one ever gotten pregnant after the end of their cycle ik it's unlikely to but I've been told that the possibility or there