Ok girls. I made a trip to the dollar store over my lunch break and bought 5 cheapie OPKs. I was so shame! the store was super crowded and I can only imagine what those ppl must have thought of me. I bought a finger nail file and some candy as well so they would not think my sole intent on coming in the store was for OPKs... even tho it was Now the questions: when is the best time to test? Is it like hpts, they work best with FMU? Do you girls keep them after u test to compare to the days before and after? (last question) do u test after u think u O'ed to see if the lines get lighter again? Sorry for all the questions... just want to be sure to get it right!