Period after Birth

How long did it take you ladies to get your period after giving birth? I had my son on July 9th and still haven’t gotten it yet. With my first, I got my period the week after I stopped bleeding from giving birth. I stopped bleeding at the end of July. I have had sex since then, but we were sort of careful (pull out method). Is there a possibility I could be pregnant again or am I just freaking myself out?