Postpartum sex and chances of pregnancy again...

Aly
So I have had sex atleast twice a day two days after the birth of our baby girl. No protection which is fine with me I guess. There is controversy saying its impossible to get pregnant right after and others saying they.know for a fact you can even within couple days of having a baby. Which one is really right??? Also how can you tell if the bleeding is postpartum or maybe your first period after the birth? Whats the soonest to get a period? Also heard if you get pregnant after the birth of a child you may not even get a first period because you ovulate first. Also can you get pregnant and still have post partum bleeding going on than? Someone please?????????? Thank you and have a great night...