BFP this morning and BFN this afternoon

Arden

Wondering what everyone thinks. I took a Wondo preg test with second morning Urine and it was a clear positive. I was so excited so I took another one same brand and it was a clea negative! I Also went and got a FRER just to see if anything came up and it was completely negative. So My question is does anybody think that it could still possibly be positive? I’m still six days away from period being due. Why would this happen I thought false positives were very rare. I have three kids so I have experience with pregnancy tests. I have never had a false positive before and it was not an evaporation line it was a solid pink line!