Ridiculous question but...how did you get a BFP?!

Caitlin

Been TTC since February. Looking back at my calendars, it looks like we've done what we're supposed to! BD every other day during fertile window, doing it the day of +opk, doing it the day after +opk, doing it when I have pain in my ovary and I think I'm ovulating...etc.

Am I missing something?! What did your month look like leading up to you BFP?