Eng, if you got a +OPK today and your temp is low today you probably haven't O'd yet. Most women O around 24-48hrs after a +OPK - it can vary though. I'm pretty sure that the LH surge which detects the lead up to O isn't found in the luteal phase.

I'm not really familiar with FF so can't really give you an interpretation based on FF chart.

It can happen that you don't release an egg, but I don't think it is common. I think with an anovulatory cycle you would see flat temps throughout the cycle - not a biphasic chart.

I also read that you can O more than once a cycle, but this is rare.

Hi to everyone - so busy at work will try and do some persies later. Hope everyone is well.