Faint positive on clear blue but negative on digital

Kayla

So this afternoon I took a pregnancy test when my husband was home and it was a faint positive on a clear blue test! Even my husband saw it and he is very skeptical with them. Then later on I took a test on a clear blue digital one and it said not pregnant 😩 I am very confused! Is there a chance my hCG just isn’t high enough for a digital test???