Period starting early?

Anna • 24 🤓✨
Okay, so I'm really weirded out. I'm supposed to be ovulating this week, but last night I noticed that there was dark brown/reddish stains in my panties last night. I put a pad on, but when I went to the bathroom again, there was nothing on the pad so I just thought that it was old blood since I've been eating a lot of red meat lately. 
But today, I just went to the bathroom and noticed the same color in my panties. It's more red, but still brownish. Is this just discharge or did my period start way early?