Ok, so my cycle is totally messing with my head. My af was suppose to start this month on the 12th. Instead it came on the early morning of the 6th. I've always had normal periods with a 27-28 day cycle. The stranger thing is that my af only lasted about 36 hours. It was way lighter than my normal period, no clots and my af always lasts 5 days. Also I had no symptoms of my af starting and I usually feel terrible before it comes on, cramps, fatigue, bloating etc. Anyone else have this happen to them? Is it possible that it's implantation bleeding? Need some advice/help here, please.