What are the chances of pregnancy and when can I do home pregnancy test?

So you have no idea of when your fertile times are ? You are not tracking them?

But there is always a chance anytime you have sex. If you are not on birth control and if you did not use any type of protection, it greatly increases the chances. Also the more you had sex during that period the greater the chances.

You wait to see if you miss your next period and if you do miss it, then you take a home pregnancy test.