I Am 23 Year Old Woman Having One Child After

I am 23 year old woman having one child after birth of my child blood is flow out for 2 to 3 month from my vegan, after my delivery I also use copper t to avoid pregnancy. But know I am suffering from abdominal pain and somthing like mixture of blood and puss is coming out. I am in pain pleas tell me the reason for that, and the treatment for that. One more thing before my marriage white fluid like liquid coming regularly from my vegna. But from 15 day it's like mixture of blood and that white liqued