Whats wrong with me?

Hey I have a question. So my boyfriend ad I have been together for 2 1/2 years kinda want a baby. I had a period August 2 lasted for 4 days then it was over. But for some reason yesterday (August 8) I notice i was spotting. It was like a light pink color not heavy. But it lasted for about a couple of hours. Is there a possibility that i could be pregnant?