This is my second cycle using OPK's, the cheap internet bundles. Last cycle, I started at CD 7, and there was NO progression, they would be semi dark, to barely there, to a little dark etc. until I got my positive CD 17. The same trend seems to be happening this cycle as well. I had a medium tone the first day, damn near positive yesterday, and barely there today (CD9 today). My quesiton is, is this normal?? I always hear about progression leading up to the surge, I clearly am not following that trend. Is progression a myth?? Does it make sense that the levels would be higher-lower-higher etc?