Pregnancy test help

Sarah • Single mom of 4 beautiful babies. All my babies have autism and seizures. Love them so very much

Hello ladys i am puzzled by something and was wondering if this has happened to any of you.

So over the past 5 days i have taken pregnancy tests 3 times with the week estimator clearblue test. The first test came out to not pregnant the on the 3 day it said 1-2 weeks pregnant then today it said pregnant 2-3 does anyone know whay this means i am 4 days passed my missed period. Thanks ladys