Spotting during ovulation?

Jacquie

This has never happened to me before (I'm 35). This month during my ovulation window I started bleeding. It was dark brown light bleeding but enough to have to wear a pad for 3-4 days. During these days I did opk and they were coming back VERY positive. So what does the bleeding mean? Doesn't seem like it would be a good thing? I had a miscarriage a few months ago, could that have something to do with it? Or the fact that I was super sick, possibly Covid. Im weirded out.