3 days before period

I took a test just because 😂 I’ve only been having very sore breast and maybe small cramps here and there (nothing consistent) so I just took one. Flo says I’m 3 days before my period and Glow says I’m 8 days before my period. It’s negative but I’m wondering if maybe because I ovulated late or something 🤷🏻‍♀️