I use ovulation test strips - there’s only been one almost possible reading on CD 14 (10th Jan). I also had some (I believe EWCM) around this time. When I looked at my heart rate on fitbit, it was steadily rising until Thurs (CD19) and then has flattened out. I know BBT is the only way to be sure but I haven’t done it - what are the chances I’ve missed ovulation?