Positive then negative?

Hi everyone, disclaimer, I will follow up with my doctor, just looking for anyone who has experienced this. I had some symptoms last night chalked it up to starting soon, took a test and it came back very positive (used iproven that I bought on amazon). This morning I took another one and it was negative. I am still three days out from AF. Is this common? I’m going to retest again tonight at the same time I took it before to see what happens, just curious if anyone else has had this and the outcome. Also just to add more detail I got 3 positives and one negative, I know, overkill but I was a bit in disbelief. Thanks!