Positive clearblue advanced but not first response opk

Kylie • Engaged. TTC 🐣 #1.

So this morning I had my first peak opk result with clearblue advanced, I had been having noticeably watery cervical mucus, and then tonight around 9pm I said a first response opk and the line isn't darker than the control line. What gives?

We have had sex every other day until I reached high fertility then it was every day except for Friday, and then tomorrow my fiance leaves to work out of town.