"Yes. Even though breastfeeding may suppress or delay menstruation, you can still get pregnant. Ovulation will occur before you start having menstrual periods again, so follow your doctor's recommendation on the appropriate birth control method to use."
"Not really. Withdrawal, or coitus interruptus as it's known, is not a good way to avoid pregnancy – partly because boys may leak sperm before they come. Also, guys have a dangerous tendency to 'stay in that little bit longer' – until it's too late. Do not risk if you are not ready to have a baby. You need to visit a health worker to decide which contraception method(s) works for both of you."