So I started bleeding on the day I was supposed to get my period but it was very very light even in color, then the following day it was heavy with a few clots, then the next day back to very very light, this started Saturday and it's now Thursday and I'm spotting and also have lower back pain, minor cramping in my lower stomach, breast tenderness around the sides, I'm exhausted, eating anything and everything in site, I took a pregnancy test Tuesday night and it was negative, has anyone else experienced any of this and found out that they were pregnant?