I received a normal period last month and then this month, my periods eta came and went and I was a week and a half late. I took a home pregnancy test and it came back negative. 3 days later, I got my "period", but it was extremely light and only lasted for 2 days. I have not taken another pregnancy test simply because the other one I took was negative. I had my first child a year ago next month and this never happened when I found out that I was pregnant with her. I have never miscarried and I do not know why it would be like this if I wasn't pregnant. Help?