Anyone try the clear blue advanced opk's? When we ttc #1 I had problems with a short LH surge and never caught my positive opk. I'd see it get darker but not really positive. I tried the smileys and never got a positive but temped so I knew I was ovulating. I'm trying the clear blue advanced opk's that monitor estrogen and LH to see if it works better. Anyone use this or have an opinion? I think it's similar to the fertility monitor by clear blue but you don't have to splurge and buy a monitor.