Bleeding brown stuff

Sadera • Work💊🏥💉 School📚📓📖 and a Mommy of ✌🏽️👬. Pregnant with my first princess👶🏽💜 due April 22, 2016
Took a test last Friday it was positive can you bleed while pregnant or does this mean I'm having a miscarriage it' looks like old blood tho and it's not a lot . Sorry if it's tmi