Ovulation test questions

Brianna
Hello ladies!!
I am ttc my first baby. I have PCOS. My doctor recently increased my clomid strength to 100mg and I have recently started taking Metformin 500 mg. I took the clomid on cd 5-9. I started testing my opks on cd 10 (I later read I should have started testing on cd 12) today is my cd 12. The past three tests I have taken are strong positives. I was just wondering what day I should start tracking my positives. My temperature dropped this morning so I wasn't sure if I needed to count cd 10 as well. I am just so confused. Can someone please tell me what day I need to be counting from? Attached are my 3 tests. Thank you!
Cd 10
Cd 11
Cd 12