OPK question

I have been taking ovulation tests this cycle and I'm curious to see if anyone thinks I missed my peak. I got the strongest line on the 26th, but according to the package, it was still a negative. Since that date, the lines have gotten progressively lighter. I tested 3x a day for a few days, first thing in the morning, around 4:30pm, and again around 8pm. The strongest line was from an afternoon test. Have I already ovulated? Glow estimated ovulation to occur around the time I got that line (I know Glow isn't 100% accurate, but it's estimating from past months' cycles, so I don't think it would be too far off). Thanks for all your help!