With some methods of contraception, such as the male and female condom, the cap, diaphragm and natural contraception methods, you can start trying to get pregnant as soon as you stop using the contraception.
With other methods, such as the contraceptive pill and contraceptive injections, it can sometimes take a little time for your cycles to return to normal after stopping taking the contraception. You may therefore want to come off the pill a couple of months before you wish to start trying to have a baby