:( OK, I'm very tired of my friend saying I'm pregnant just because I'm a week late for my period... I HAVE NOT had sex but I did get fingered and my friend keeps saying he could have had sperm under his finger nails in case he was jerking off before I came to see him... I really don't believe her, but this has never happened to me before so I'm not really sure...

:( ok, i'm very tired of my friend saying i'm pregnant just because i'm a week late for my period....i HAVE NOT had sex but i did get fingered and my friend keeps saying he could have had sperm under his finger nails in case he was jerking off before i came to see him....i really don't believe her, but this has never happened to me before so i'm not really sure.......
It is possible to become pregnant if ejaculate is on the fingers and they are then inserted inside the vagina. It seems unlikely though in your situation. Sperm does not live for long outside of the body so if your boyfriend had masturbated prior to you visiting him, any sperm that was on his hands or fingers would have been washed off or dead. The chances of you being pregnant are very remote in this situation. Please familiarise yourself with safe sex options including condoms, gloves and birth control pills if you are participating in sexual activities. If your period still has not arrived within the next week, take a pregnancy test or make an appointment to see your doctor.

There are many things, like the stress of starting sexual acivities, and the such. But as noted, please investigate the causes of pregnancy and birth control. And of course assuming you are 15 ( from your user name) even best, why not wait, no need to rush being a mommy.