I had a positive OPK test on Sat and Sun and it has now gone negative again. I have had EWCM since Friday and still have. However, there is no rise in my BBT yet? I was assuming I had ovulated based on the OPK and EWCM, but when I tested my BBT this morning it was still low, but my OPK is showing negative now. How can that be (and should I still be )? Thanks !