Low BBT this month??

I know the watch bbt isn’t as accurate as actually tracking with a thermometer, but even so, my bbt this month has barely moved from the baseline?? Every other month you can see when I ovulate and when I get my period easily, but this month is so… weird? I supposedly ovulated the Thursday before the weekly chart, but I think I ovulated before that on Tuesday. Monthly chart shows it start to drop when I got my period and that’s when the chart got iffy.

Any ideas why or advice??