As a general rule, you should wait for about 18 to 24 months before trying to conceive again. The longer the time the better it will be. It should be noted that duration will vary from person to person.
In a caesarean section, a cut is made into your belly and uterus just along the top of your pubic hair. It will take at least three months for it to heal well after your baby's birth. But the longer it is left to recover, the stronger the heal will be. There is a risk of uterine rupture and abnormal placental attachment if you try to conceive before the cut is completely healed. This is because your womb will expand tremendously during pregnancy, if the cut is not healed fully, it may cause the uterine wall to rupture.
In most cases, caesarean section will be recommended for delivery for women who had undergone caesarean section before. According to some statistics, about 80% of pregnant women choose caesarean section again for delivery if they have undergone caesarean section for their previous delivery. This will minimize the risk to the womb and the infant during the childbirth.