My calendar on here told me that my period was due the 13th - 18th. My Ovia app calendar told me the 8th - 13th. Well, what I believe is my period started the 5th. Ever since the 5th (of this month) it has been a lot lighter bleeding than what I normally have when I'm on my period because normally they are extremely heavy. I've been wearing pads but nothing gets on them at all! The ONLY time I see anything is if I wipe (not even really then) but really when I'm wearing a tampon and barely anything comes out on that or either it's light pink or brown. The first two days it hard red but not much at all. Now, it looks brown and sometimes sticky stuff on there. Any idea what it could be?