Is poor response to Natural LH possible?

We're been trying to conceive for 9 months. Two months ago I started charting my temp. I also use ClearBlue Monitors (3 times a day) and the OV Watch. My cycles are perfect--28-30 days and ovulating day 13-14 with lutual 14-16 days long. The watch and the 3 monitors all state I ovulate on the same day but last month I never had a temp rise???

It took me three years of monitoring to conceive my son. a year prior, my fsh tested at 14 and I responsed poorly to the IVF cycle we did so it was cancelled. I took an Hcg shot (left over from cancelled IVF cycle) the day after my natural LH surge during the cycle I conceived him. Could my problem be that I'm responding poorly to my own LH and fail to release an egg? I can't find any information regarding poor LH response (just fsh)?