Which should I trust?

Alicia • Mommy to a 5 y/o little girl. Angel mama 🥺❤️ Wife 💍

I took a clear blue opk one with the new testing stick thing and the old one from 3 months ago. With the strips from the new pack.

I got a negative on the old one

And a flashing smiley on the new one.

Which should I trust? The new one right ?