Hi, My name is Mandie. I had TR (tubal reversal) done November 7,2014. My fiancé and I are going to try OPK after AF leaves from her visit. With my two other children, I never tried with any of the BBT, OPK, or CM checks. I'm 27 years old and I had 7.5 cm on my left tube and 6.5 on my right tube, I was told I had excellent flow thru my tubes. With any luck the first response OPK, will help us concieve. Any other tips ladies?