Pretty Scary..Please Help!?

Okay so I am 10 days late today. I went to the bathroom to do num 2 (sorry for the TMI) and when i wiped I had a little brown blood on the toilet paper. I cleaned myself up, thinkin it may be my period, well it cant be. I am not bleeding when i pee nor when i stick my finger with a wipey to check if there is any blood. What can this be? I was realy hoping i might be pregnant, but this is kinda scaring me..PLEASE HELP