I used to temp because my periods can be irregular (anywhere from 25-42 day cycles). I ovulated every month, but just on a different day. I realized after awhile that I could feel ovulation, so now I just mark that down and know af should arrive 13/14 days later.
Once we start trying, we will actually be NTNP, but we always end up bding during my fertile time of the month (probably because my sex drive is so much higher then), so I'm hoping to just get pregnant.
We are both young, I will be 27 and dh will be 30 when we try, but I'm still really nervous about infertility. I also have a bicornuate uterus, which throws more confusion into the mix.