How accurate is a pregnancy test 4 days before period/10 DPO?

Meghan • 🌸 mommy to Iyla Mae 🌸

I’ve taken two FRER and two digital clear blue “smart countdowns” today and the days prior lol, all negative.

I have a whole box of the HCG strip tests, but not sure if they can detect before missed period.

Do you think I can safely assume I’m not pregnant (and ofc test again to be sure) ?