Did I ovulate? Help!!

Cybel

this cycle I tried metformin and geritol! I nmly ovulate on CD 14/15, today I'm

at CD18. On CD 10 &11 I got dark opks but not the usual dark that I can say yea the test line is darker than the control line. I have never ovulated before CD 13 so this wud be very strange if I ovulated around CD 10/11. I am still testing though and the lines ah lighter. Any of u experienced this ???