implant / injection contraceptive how was it for you?

im due my 8 week check at the doctors after giving birth where they want to set me up with a contraceptive of my choice if i choose.

i was thinking about the injection or implant

wanted to now if you have had either and if you could answer the following?

which one did you have?

was it painful to get? how painful and any after effects?

did it affect your periods?

did it work?

any after effectes like weight gain etc...

any other advice?

if you tried conceiving afterwards did your cycle return to normal and was conception successful?

thank you so much in advance