i search for an ovulation calculator online, and enter my period dates. then we um, make the most of those 4-5 days the computer says i'm fertile
i tried using opk, but never got a pos, and have been trying to figure out where my cervix is in all that mess, but it all kinda feels the same and i can't find it lol.
the ovulation calculator worked for me the first time i tried it. i got pg that cycle.