BBT drop 7 days before AF?

Does this mean I'm out this month? Was hoping for a BFP this month. My temp dropped way below the cover-line yesterday but then raised up by 0.2 but still below the cover-line, since it is still 6 days before my period is due, if my temps keep on rising will that be a good sign, I'm hoping they don't stay low. Thanks the 2WW has killed me.