just wondering... as I am waiting for O i am over analysing my charts! lol! i just wondered as oestrogen is what makes the follicle release the egg and it has a cooling effect on BBT does that mean a low BBT is a good thing? also, on the flip side does a high BBT mean a lot of progesterone for the luteal phase and so help to keep a pregnancy? Basically i seem to have quite low BBT before O (96.6 on average) and then a large jump to 97.8 (highest was 98) after ovulation and just wandered if this was a good thing?