Postpartum bleeding

Si

I’m 10 days postpartum (c-section) and my bleeding nearly stopped for the past 2 day’s. Well today my bleeding picked up again and is nearly as bad as day 1. Not soaking a pad or bleeding uncontrollably but just so odd I stopped and started over again. Anyone know why or had this happen to them too? Yes I’m breastfeeding and no I wasn’t any more active today than usual. Thanks!