Brown discharge during pregnancy can be a cause for concern, but it is not always indicative of a problem. In your case, since your recent scan showed that everything is fine and the cervical opening is closed, it is likely that the brown discharge is harmless. However, it's always best to consult with your healthcare provider to get a proper evaluation and peace of mind. They will be able to assess your specific situation and provide you with personalized advice based on your medical history and symptoms. Remember, every pregnancy is unique, so it's important to trust your instincts and seek professional guidance when needed.