SO CONFUSED PLEASE HELP

So according to my multiple apps my ovulation day may have been either yesterday or today or tomorrow. Yesterday I had EWCM so I thought I may have been ovulating. I bought a ovulation test but waiting until this morning to take it with my fmu. The digital test malfunctioned (user error) but when I looked at the actual test inside it had two strong lines. It said to go 4 hours without peeing, then test again. So I waited and tested again. This time the test worked and it came back as a empty circle meaning low fertility. Does this mean I may have already ovulated? Or was my pee too diluted since it wasn’t fmu? PLEASE HELP ME.