False positives on frer

Hallie • Mommy of one little girl who is 8 and my rainbow baby boy who is 1 ❤️ and another due September 2021

Has anyone had a false positive on frer? I got a faint line this moring on my frer then went and bought more to test again with the same urine and theres no line that k can see 😥 the faint line showed up in time frame and is pink but the second test shows nothing. Top first test bottom second test.