ovulation confusion

Kylar • Mama to 1 💙 Baby #2 coming 6/2023 💗

alright, I haven't actively tracked my ovulation so I don't know what's going on. AF ended on 10-1 and my fertile window started 10-7 I took an ovulation test and the test line was dark but not positive. I took another test later in the day, this morning (10-8) and just a few hours ago. all if them progressively lighter. I don't know what this means, given the fact that af ended 10-1 is it possible to ovulate less than a week after?