What could this be? TMI!!

It is NOT my period. I went to the bathroom and the first time i went, i wasnt bleeding, the second time I went, I got this. I have no idea what it is, but if anybody knows, please help me out! I was bleeding for less than a day. I had a pad on after I discovered this. It was dark red/brownish. It came out brownish spotting when I woke up the next morning and so I knew it wasnt AF. My AF is due on August 13th! Can anybody tell me what you think it is?