How soon can i test?

Victoria • Hi(: im 20. I have pcos. An i never have my period so i cant get pregnant. I just started a new med to help. So we are praying for a little one soon(:

Okay guys I finished my letrozole Oct.13 my ovulation dates was the 19th -the 25th.

We had sex all threw those days an before . question is when can I take a pregnancy test. I've herd some people have found out as early at 2 or 3 weeks. Its killing me not to take a test. I have a few signs but then again they could just be something else.

Sore breast ,tiredness, fatigue, nausea.

But anyways. So when could I take a test. Any help is helpful (: