I'm so confused ?! help!!!!! OPK test!!!!!

Hannah • Hey 👋🏽 guys. 2 year old. Engaged. Trying for baby 👶🏽 number 2! 😍💙👶🏽😘🙌🏽
Okay ladies. So these 6 tests are ovulation tests. I have been testing since the 9th. According to glow my fertile week is the 12-18th with my highest peek day tomorrow the 16th. I feel as if I have already ovulated. Before I started testing. My period ended on the 4th of this month. Here's the 6 tests. 
They just seem to not even be getting darker. But ALL of the test lines on every single test have evaporated. Idk why because when I see other women post their weekly opk tests BOTH lines are ALWAYS there. Anywho. All lines are gone except the one on the 3rd test. Even the one I took today is gone. But this is the 3rd test in regular and negative 
Does anyone know why this is the ONLY test still with a line?! Could this have been the day I've ovulated. Me and my SO have BD every days of my "fertile" week. 

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