Menstrual all over the place

So I was ttc and then I gave up cause my menstrual has been all over the place...I try to track it but it's never on point...try sex when I'm suppose to b ovulating but still no baby... I give up! This week it makes me two days late for my menstrual and I want to get excited but I think after that miscarriage I jus can't get pregnant... don't ask it jus what I feel in my heart...so let see when my period decide to come...#day2