I just can’t get pregnant

I’m 22. And have been trying for 2 years straight to get pregnant.. Nothing happens .. My period comes on time or early every month... Every fucking month... I know when i’m fertile i know my exact ovulation day.. i will have sex that entire week multiple times... and nothing .. nothing at all... smh except my stupid BLOODY PERIOD.... i’ve got examined there.. Nothing is wrong with me.. Doctor only found a cyst on my left ovary.. which she said is one of those that flair up when your ovulating ... I been trying all month once again... And my period is due in two days.. my boobs hurt really bad and i’m having the slight cramps in my pelvic area so i know aunt flo bitch ass is coming... this is depressing