Opks- help!

Emilee • 👶🏼03-03-2017 👼🏼23 week angel Olivia 1/4/19 👼🏼 8 week angel 5/8/19 Trying for my miracle rainbow baby 🥰
So I wasn't planning on using OPKs until next cycle if I didn't get pregnant on this one. But two days into my green week I caved and bought the clear blue digital tests. It's was Friday evening so I took one right away because the instructions say the stick needs to get a test line of urine in order to detect the surge in hormones. So Friday night and then Saturday am, it came back low. Then this morning it came back as peak! It totally skipped the "high" level?? What the heck! Has this happened to anyone else? The instructions say once the peak symbol is displayed to not test until the next cycle. Anyone have any insight? I would appreciate it!