Tasha - Gidget is right, brown blood is typically old blood. I had bleeding at around 5 weeks and it totally freaked me out but everything proved to be just fine. My nurse told me as long as it was not 'fire truck red' and not associated with cramping, that was positive. Keep a close eye on it and hopefully you will find it was only the one spurt.

Maybe give your OB a call just to get some reassurance, I know how terrifying this can be

Take Care