I don't think I'm fertile.

Me and my fiancé have been trying for a baby for a year and a half, we've been having unprotected sex like 2-3 times a day. I got told I had PCOS (polycystic ovarian syndrome) when I was 16. The doctor said this doesn't mean I'm infertile but I can't help but feel it will never happen. does anyone else have PCOS and manged to get pregnant ok? Or have any advice? Please help😔