??????

I've been doin Glow for a few months now and so far it has predicted my period correctly. I'm supposed to start today and normally I'll start spotting the day before I'm due. Nothing yet ! I'm not freaking out right away cause the days not over, glow could be off by a day or two, and I haven't had any other out of the ordinary signs. Still in the back of my mind tho ! Hopefully it'll show up soon ?