Hi there,

I have started dating a girl and we had unprotected sex. She then tells me 6 days later that she is pregnant, but about a week before we started dating, she had sex with one of her friends. What are the chances the baby is mine?

She then tells me 6 days later that she is pregnant,
HIGHLY unlikely, but a DNA test would confirm paternity..

Very unlikely. It's not possible for her to get a positive pregnancy test 6 days after sex. She wouldn't even officially be pregnant at that time.

But, like Ben said, a DNA test will have to be done. Still, if I were you I wouldn't worry too much. Read up on reproduction and how it works, and you'll understand why.

Good luck.