TTC while breastfeeding, period not yet returned

Hi all, I wish I took a pic but all my OPKs come out looking exactly the same- 2 faint lines. My baby is almost a year old and I haven’t gotten a period back yet, was just taking these to see if I could maybe be ovulating yet. I used the same brand 2 years ago (this is a new box lol) and my positive results always looked clearly positive- like 2 super dark lines or one clearly darker. I never took them before the middle of my cycle but they always had one dark line (control) and the test line would get darker closer to O day.

Anyway now it’s 2 faint lines, exactly the same. Is this just a thing that happens when your body is in limbo? I just want to be fertile again!