OPKs and Clomid

Alexis β€’ N.E.H 01/01/16 πŸ’—πŸ‘§πŸ» A.O.H due 01/2019 πŸ’™πŸ‘ΆπŸ»

I read a lot here and other boards that there would be false positives if you started O testing too close to your last pill. Out of curiosity I peed on an O test and I am still on my Clomid day 3 and I did not receive a false positive. Does that mean it’s not working? Or is the false positives not true? Just curious.