I’ve been seeing lately is women giving other women false information about when the ovulated because they are a drastic dip in a chart followed by a rise and assume that’s ovulation. A dip does not indicate ovulation! You are looking for a shift in temps. The major rule of thumb to look for is 3 sustained higher temps then the previous 6 temps. Yes, reading bbt charts can be confusing. But please, look at the pinned post and do your research before you start giving false information.