Any one suffering from pcos? Need some advice.

So i have pcos and i usually have irregular periods. But for my past periods i got them on time and now am 6 days late defo had unprotected sex.. feel moody reallly tired really sensitive nipples bloated sometimes abit nausea. So idk if its my periods messing with me or i might be pregnant dont want to assume i am cause of my pcos. But any advice? Wat should i do? Oh yea i get them late sometimes but feels different this time.