I had unprotected sex (pull out method) on April 9th. I have a regular cycle of 28 days and my last period was on the 1st. I m assuming I ovulated somewhere around the 15th. My next expected period was today the 29th, however I started bleeding on the 27th. The blood was a normal amount but it was a bit darker in color. The flow gradually got heavier through the day and on the 28th it was pretty heavy and bright red like it normally is. Today, the 29th, the flow was a lot lighter. I have experienced PMS symptoms like I would with my normal period. I had bad cramping in my legs and back and I broke out a little on my chin which is all normal for me. However I have had tender breasts as well and so I m confused on if I m currently experiencing my period, which is two days early and a little lighter than normal, or possible implantation bleeding?