I am 28 year old female. My period flow has undergone a bit of change for some months. I get brownish discharge in the beginning and it appears that my periods have started then after half a day bleeding stops and then after about 24 hours proper period starts and lasts for 5 days. Although all months I don't get painful period but when it pains, it's excruciating and lasts for a couple of hours causing nausea. I don't skip periods and it's usually on time but I have had Polycystic Ovaries in 2017 when I was given birth control pills for 6 months and thereafter the cysts disappeared. I am concerned about the starting of bleeding and stopping for sometime before proper period starts. Kindly advice.