Hi doctor, For the past 5-6 months, I have noticed that my menstrual flow has reduced significantly. In the last two months, I have observed that during the first 15-20 hours of my period, there is only a small amount of black or dark-colored blood on my sanitary pad. After this initial phase, red blood starts to come, but the flow remains very light compared to what I used to experience earlier. I am concerned about this change in my menstrual pattern. Could you please guide me on what I should do now?