If you have not had your period after giving birth and you have intercourse without any contraceptive measures, you do have the possibility of becoming pregnant, although the chances of pregnancy are relatively small. In the case of breastfeeding, the secretion of lactogen increases during breastfeeding, and in a state of high lactogen, amenorrhea can occur, as well as ovulation disorders. However, no situation is absolute, and if there is occasional ovulation or ovulation has resumed, it is possible to get pregnant. Therefore, it is important to use contraception during breastfeeding, and it is advisable to use condoms throughout sex to avoid pregnancy. In addition, it is not possible to take birth control pills because they can reduce the milk or be absorbed by the baby through the milk.