When I went off Nuvaring a few months ago, I started researching how to <a href="https://play.google.com/store/apps/details?id=com.glow.android">track fertility</a>. I got OPKs and was extremely frustrated when I wouldn't get a surge at all. This cycle, I finally got a surge around the time I assumed my period was about to arrive. As it turns out, I had an unexpectedly long cycle and the OPK helped me catch ovulation. Without it, I would have assumed I missed it that cycle. I got a BFP this morning on an FRER and I'm elated. Baby dust to all!