I can't tell if I'm pregnant or not?

First of all if I were it'd be just over a week along, but I've always been told you don't get symptoms that early. The last two days I've felt like I was going to throw up at any second, then last night I got some cramps which I guess I could count as period cramps except they were super light.

Now here's the kicker: I just got my 'period' my last one started on January 28th, so with today being the twentieth it's just a little early because I'm not due until the twenty-fifth. So is there any chance this is spotting? Because my periods are always exactly on time. Any insight would be appreciated. Thanks in advance.