Sayang, headaches and mild spotting can happen when you start birth control pills, but the brownish discharge with blood drops and nausea together, especially this early postpartum, is something you should check with your doctor about, just to be safe and put your mind at ease lah. A few of us mummies had similar worries after starting desolon, but better to get it confirmed by your gynae than worry sendiri, because at 50 days postpartum your body is still healing and every mum is different.