I was two days late on my period this month and on the third day I had thick dark brown discharge coming out of my vagina. I had that for a day and then I had severe cramping the day after and found out I was bleeding. It was not so heavy (like my usual periods). I've always had light periods for about 3-4 days every since. But this menstruation lasted only for two days and on the third day it was very very light, like it was just a spot. Is there any possibility that I could be pregnant? I have no symptoms of pregnancy, it was just when I had cramps I was suuuuuuper tired, which was unusual.