Hello everyone!

For the first time today, a coverline appeared on my temp chart on Glow. What does it mean?

Here is my chart :

Also, I think that I ovulated on CD14 as I had lots of eggwhite CM and my OPK was the darkest I got this month (even if it was a little lighter than the reference line. The line continued to fade the following day). But I don’t see the temp drop right before, like I did previous months, what do you think?

(Note : I know that some temps are missing in my early cycle. Usually, I don’t miss a day and didn’t miss any in my 4 previous cycles.)

UPDATE :

As asked, here is my chart with CM and OPK results.

Any clues?

And if know what this coverline means, please let me know. 🙂