U can after delivery, my hospital offered me. I haven't done it.

You can have copper t anytime after delivery. Gernally gynac ask you to come after periods. Its a very simple process hardly takes 5 min but it has to be done by gynac only. There are different type of copper t available like 3 year, 5 year 10 year. You can get it remove even before duration whenever you want to conceive.

You can directly ask to to your gynaecologist. There should be no hesitation. She will suggest you all the things regarding it