What to trust?

Digitals showed low/baseline, high (flashing smiley), then peak (static/solid smiley) on CD 6, 7, & 8.

My corresponding cheapie strips have all been negative. A small surge maybe.

My big surge usually doesn’t happen until cd11/12 with peak usually on cd13.

I’m expecting the cheapies to show that lh surge as they normally do within the next few days.. should I assume the digitals are just completely wrong? What would cause such a discrepancy??

I’m supposed to take progesterone 4 days after positive opk so, I was wondering if anyone had this happen and what their experience was ..