can someone please explain the bleeding after birth?

Gull • Living in Sydney, Australia. TTC since June 2015 and now over a year later I`m finally pregnant and due June 2017
First time mum with no idea and yesterday I was told that you bleed for 6 weeks after birth and have to wear mater out pads. Do you really bleed for that long. I just bought some stayfree maternity pads but they don't have wings will that be ok?