TRYING TO GET PREGNANT!!

Okay so my OBGYN had me take these pills for ten days to make my period start ( SENCE I HAVE IRREGULAR PERIODS ) Then Once My Period Started She Told Me To Take This Letrozole on days 5-9 .. My period was 8-11 & I Took Letrozole days 12-16 I Took A Positive Ovulation test on the 13th .. And I Been Feeling Really Sick & I Pee More & I Take A Doodoo Every Time I Pee .. Could I Be Pregnant Or Am I Tripping & I Had Sex Every day Before My Period Started & Every Day While I Was Taking LETROZOLE .. Could I Be Pregnant ?? And When Should I Take A Pregnancy Test ??