I am bleeding even after the 40th day of normal delivery, bleeding stopped in the last week n started again after 40 days. why?

A. Bleeding after birth may last for a while Bleeding often lasts for around for four to six weeks, but could last up to 12 weeks after your baby's born . If you're worried, you can talk to a health professional. Bleeding will start off heavy and red to browny red. It will become lighter in colour and flow over time .