Brown discharge during early pregnancy can be a common occurrence and is often nothing to worry about. It can be caused by various factors such as implantation bleeding, hormonal changes, or even cervical irritation from the injections you received. However, it's always best to consult with your healthcare provider to rule out any potential risks or complications. They will be able to assess your specific situation and provide appropriate guidance based on your medical history and symptoms. Remember that every pregnancy is unique, so what may be normal for one person may not be for another. Trust your instincts and seek professional advice when in doubt.