We have been trying for about 8 months now with no BFP although we haven't always been diligent about tracking, and using OPKs. The app was great at helping me know when I ovulate and when my period was supposed to come. And this morning on a whim i got on my app and it said I should be on day four of my period! So I thought ok that's not unheard of me being late but I'll take a test anyways. And now I've taken three BFP! So excited!!!