Hellobee Boards

Is this your first month using OPKs? If you haven't used them before and have only been tracking your cycle length, then FF can't really know when you are ovulating, it's just guessing. Your luteal phase could be shorter than the "average." The 1.5 lines means that your LH levels are on the rise, but not that you are spiking yet. Keep using the OPKs until you get that smiley face. Also, a positive OPK means that you will ovulate in the next 12-36 hours, not that you are currently ovulating. So it's best to keep up with the sexy times for a day or so after a positive OPK.

I was going to write almost exactly what @kiddosc: wrote. Once you get your surge, the second line will be very dark, and then that lovely smiley face will appear! I think I used these tests two times a day starting around day 10 of my cycle. I had a pretty good idea when I O'd because I charted.