How long does it take too know if you are pregnant?

Question

How long from the actual day(s) of sex would it take to know if you are pregnant?

Answer

If you had sex around ovulation, you'll usually know if you're pregnant after a 2-3 week wait.

Answer

You will get pregnant if you ovulated, and had sex near that time. Just because you sex does not mean you will be pregnant. If you are having regular periods you can test about the time when your period is due. I think the instructions in the pregnancy tests recommend 19 days if you have irregular periods