Not scheduled to ovulate for another 5 days?

Trying to figure out if I'll be ovulating earlier than expected, just got back from a shared room family vacation so have not had any sex. Noticed a lot of creamy but stretchy CM tonight and tested (pic below) I thought I was only starting my window today and ovulating in 5 days. I've had situations where it was almost positive early on but then was in line with glows original calculations.... When does the creamy CM happen in relation to ovulation???