First time OPK user

Jen.
Ok. I am on CD13, and have been using opk's since CD11, since all three of my apps said this is my fertile week. They've also said my expected O date is the 14th.. But it looks like these lines are getting lighter?? Anyone experience this? Could I have O'd before CD11, which would be only 6 days after AF ended? Or could I O later than expected?? Help! 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors