Well, when I was TTC with Audrey, I had only just started trying to track everything for the last few months. It was hard for me because my periods were SO irregular.. I used OPK, and whatnot, and did some temperature stuff.. none of that seemed to help.
What I think made it so hard to get pregnant was that I have a tilted cervix. I didn't know this until I went in for a prenatal appointment... I didn't have one with Jaiden (that I know of) but after having so many procedures done to my cervix, maybe it changed it? or my body changed? who knows..But from what I read online, it said that it can cause TTC to be harder.. ALSO, I had bacterial vaginosis.. I don't know for how long, but go get a checkup, get tested for all that stuff before TTC, that way you know nothing like that will prevent anything
BUT, I can say..
EXPERIMENT with positions! for real. I think the time we were "successful" was when we were in a VERY funky position. I will leave the details out, but it was the only time DH and I used that position, and it even hurt him! LOL but, I think that was the trick to finally getting pregnant!