Late period negative Walgreens brand.

I’m not trying to conceive but wanted to see if anyone else had a similar experience.

My cycle is always between 24-27 with an except for after I miscarried a year ago and when my cycle game back the first two months were 30.

Anyways I’m on cycle day 31 and no period. I tested yesterday day 30 with walgeeens pink dye and negative. Not sure if the internet is right but I read those have high sensitivity. I’m nervous that and wondering why I’m still late.

Had anyone had false negative with Walgreens?