Hi Willow19,
I'm no expert, but it sounds like that could be implantation bleeding. I know a few people who saw very faint blood for a very short time, and they figured it was implantation bleeding once they found out they were pregnant. I know that it must be hard to try and decipher the signs (or lack of signs) from your body! I've had irregular periods for a long time, so I was pretty well on the edge of my seat every month! haha, well, my fingers are crossed for you -- don't give up hope!!