birth control implant

angelina
hello!
I would like to hear everyone's experiences with the birth control implant. 
I also have many questions lol
how do I take care of it when I first get it?
how affective is it?
how does it work?
what are the things can go wrong?
how long does it take to heal?
if I haven't gotten a period since my postpartum bleeding how will I know when the implant is working?
when does the implant start working? 
 
if someone could help me that would be great!