Post Ovulation

Kyra

Hey I was wondering if anyone could help me with this question.

So I felt ovulation pains and cramping on the 8th of Jan, but this app says I ovulate on the 9th if this month. So my question if I ovulated on the 8th does that mean I’m 4dpo instead of 3dpo?

I am currently TTC and I started tracking with the clearblue digital ovulation test. Jan 8th is when I peaked the tester said.