Hello all, help needed please. Last month I'm fairly sure (using BBT) I ovulated on CD19 on a 31 day cycle. I'm currently on cd10 and got a positive OPK yesterday morning but it wasn't positive an hour later! My temperature dropped on CD8 to 36.12°c from 36.since cd2 but then went back to 36.52 yesterday and 36.54 today so FF is not predicting I've ovulated. I never seem to get EWCM so I can't tell from that and wondered if I've just picked up an erroneous LH surge not related to ovulation?