Implantation bleeding

Justine • I`m 20, my boyfriend & I are having baby #1 baby dust to all! :)
I've been spotting for the past five days, I was kinda scared at first because I'm not suppose to start my perido until next week. I'm not sure if it's implantation bleeding or not. It's a brownish color and I have no pain or cramping, but I'm always really tired. What you comments on this?