Factors affecting fertility...

Abana

Hey ladies, just a question. Do you have any ideas on the reasons why a woman is having a hard time conceiving?
I am a little getting desperate now that we've been trying to conceive for almost 6 months, but not really considering it as something super depressing as we already have our son. I know it's linked to my having irregular periods but I'm curious as to what other factors affect difficulty in conceiving and/or suffering infertility. Thanks!