If it's only brown, you shouldn't worry too much. My previous pregnancy
resulted in a miscarriage and started out with brown discharge
, but quickly progressed to pink, and then finally red. With my current pregnancy (12w 4d) I had brown discharge off and on until about 9 weeks and my ultrasound yesterday showed a perfectly healthy baby. Unfortunately, if you are at the beginning stage of a miscarriage, there isn't much you can do to stop it.