Can a girl be pregnant with a fingering with sperm finger. after 5 days when her periods stop.

Sperm in vagina : Pregnancy occurs when sperm is deposited in the vagina. With the details you are presenting it seems i unlikely that pregnancy is possible. You could check a pregnancy test 10 days after to confirm. It sounds like you need to be on birth control in the future to prevent an unplanned pregnancy down the road. Use Plan B if less than 72 hrs.