*TMI* pp bleeding - csection

*TMI* I am 6 weeks PP from a c-section. The first 3 weeks I barley bled and then around the 4th week I began heavy bleeding and now its EXTREMELY heavy. So bad that Im changing my underwear 2x a day because it goes through a pad. Once I sit down not even 1 minute this happens.. it fills my toilet with blood. I dont have any pain at all.. but is this normal? Should I contact my dr about this? Im breastfeeding as well so I didnt think it would be my period so soon?