Girls, hello everyone! Can you please tell me who uses what methods of…

Girls, hello everyone! Can you please tell me who uses what methods of contraception after childbirth? I apologize for being blunt, but I want to hear other people's opinions. Doctors say what they do. I'm in thought. I heard about pills, some say that from them you start gaining weight, and I really don't want to. So, after childbirth, I won't get back into shape.