Pregnancy chance? Thoughts and help needed.

Liv

I had recently had unprotected sex with my partner on a day when my chance of pregnancy was relatively high (about 11-20%), and need some thoughts on whether or not I could potentially be pregnant. This occurred on a friday and today is Saturday, a week after. As of today my calender says I have a low (about 3%) chance of pregnancy.

How do I know if I am pregnant or not?

Thoughts?