Has this ever happened to anyone?

Monday afternoon I got a a positive from a generic digital.

Tuesday morning I got a negative from Clearblue digital. Tuesday late morning another nehative from a generic digital.

I waited a few days. Took one Thursday morning and its positive! (Clearblue digital)

This is my 1st pregnancy after my miscarriage and I am a little worried. Has this happened to anyone? Was everything ok? Im a little past 4 weeks.

Whew 😟😄happy and nervous!