Confused

So my cycles are about 32 days, and my periods are normally 6 days long (last day is usually light). Last cycle, I was 11 days late, had a medium flow for two days, and then one day of spotting. I started tracking my LH levels again a week after my period. According to this app, I was supposed to ovulate 8 days ago, and I’m still not getting a positive LH. Below is a pic of my LH levels everyday.

I did test twice a day last week; none were positive.

I took a pregnancy test on Friday to see if that was a possible reason, and that was a BFN.

Anyone know what’s going on with me?