I have been ttc for about 7 months. I was on the pill for 10 years prior.

I have gotten regular Pap smears and check ups.

always have had regular periods and I bought opt tests and I ovulate regularly.

I am just curious of what some of the reasons of infertility could be? I know pcos and endometriosis are some and of course low sperm count but what could some others be that could potentially be going on?