Evap?

Angelique • Momma to 2 little boys and a little girl❤ Valentino Lee 06/14/17 Ramiro Jose 01/17/19 Taya Nicole 11/10/20

Ladies, what are the odds of getting evap lines on 4 tests? Earliest test was taken 4 days before my period was supposed to come. Latest was 3 days after a missed period.