I'm due for another birth control shot on may 10 I just had my cycle a day after it ended I had sex. I'm expericing brown didcharge could I be pregnant?

DEPO- PROVERA (medroxyprogesterone) SHOT. You got your period sometimes it does not come.Having brownish discharge can mean pid if accompanied by lower abdominal pain and dyspareunia or residual menstruation. Pls. Check with gyne if in doubt.