Help me?

So I'm really confused. My period is always regular and this month it came a week early. The first day was very light the second day was medium and then after that basically nothing. It's also a lot longer than usual. It's usually 3 or 4 days and that's it. But I'm not bleeding really. It's only when I wipe. My period wasn't suppose to start till tomorrow and I'm still spotting...?