Spotting or not??

I'm new to this "posting" thing. But I am wondering... if this is spotting or something else or nothing at all. I was supposed to start my period Monday but the only thing I've gotten was a tiny bit of blood. Not enough for a light tampon or a regular pantyliner. I am using light tampons and changing them often but it's still the same amount of blood. I'm in need of some advise.