Okay, so i was due for my period on about the 27th, and it usually lasts a week. its usually pretty heavy. sometimes i'm a bit late, like 2 or 3 days, but it's usually quite regular.. for the past two days my period has been very weird. on the first day, it was just kinda brown and very light. and then the second, i had actual blood that looked like my period, but only when i whipped. does anyone know why this is?!