Ladies !

AF arrived yesterday, two days early , only it wasn't like my normal AF.. it's hardly there and not getting heavier. I don't even know if it should be called an AF.. it's like light spotting... sorry if it's tmi but I use tampons and every other AF it fills up for the first and second days.. this time around I'll go to change it and it's practically empty just a small spot. And it's not bright red like normal. I'm lost. Any thoughts ?