pp bleeding

my daughters 16 days old. my bleeding is sort of wacky now.. some days i barely bleed and some days its bright red blood like period blood. this is my second baby but i dont remember bleeding like this with my first. like sometimes i bleed a lot to where when i go the toilet it has a good amount of blood in it. i dont know if im just freaking myself out or if im just over doing it with activities that its causing me to bleed more, (considering i chase a 18 month old around all day plus my 16 day old baby) because by this time with my first I stopped bleeding completely.