When should someone be concerned about lochia? is it happening because i'm breastfeeding?

Heavy bleeding, pain: Lochia is normal after having a baby, regardless of vaginal delivery, c-section, breastfeeding or bottle. Heavier bleeding should settle down within 5-10 days of the birth, but lighter bleeding & discharge can continue for 4-6 weeks. Contact your OB or midwife if the heavy bleeding is enough to soak through a pad an hour, continues past 10 days, or if you have pain, fever or odor.