Hi My age is 26 years 4 years back I have c-section and my problem is  periods are normal but it was prolonged like before my periods are 5 days now it like 5 days after 8th day I 'm getting brown discharge and spotting for 5 days .from past 6 months I'm having same cycle .I consulted Doctor and she suggested ultrasound pelvic in that everything was normal .I dont know what's happening to me.is this a serious problem?? kindly help me out