Need advice about OPK

Zarah • Professional Photographer in Arizona. Married for 4 years Currently Pregnant with peanut #3
OKAY! So I've been continually taking ovulation test strips, even after my surge, and the tests started getting lighter. Two days after my surge it was super light so I assumed I was done ovulating-and if im getting this wring someone correct me- so I ASSUMED I was at 2 DPO, and I took another test this morning and it is darker than yesterday. I am SUPER confused, I thought they would be getting lighter. Or am I wrong? Am I still ovulating?