I’m so confused!

So I don’t track anything but my period! I’m attaching a photo to show when my period began and when it ended. Today I wiped and there was brown stuff. According to glow (since I’m not tracking) I’m 3 days away from ovulation. I have NEVER had residual blood or old blood that long after a period, maybe on day 4 or 5 but that’s it! I’m scared!!!