Brown Spotting Ovulation?

I’m on CD20 an for the past 2 days I’ve been having some brown spotting with a little bit of cramping and it felt like my period was starting. I only see the spotting when I wipe it was never heavy enough for a pad or anything. This morning the spotting is lighter and seems like it’s about to stop. I thought I was just starting my period early but now I’m wondering if it’s just ovulation spotting? Have any of you ladies experienced this during ovulation ?