Is it possible to get pregnant if I haven't had a menstrual period for four months while breastfeeding?

Generally speaking, whether a woman can get pregnant if she hasn't had a menstrual period for four months during lactation needs to be assessed according to individual circumstances. If her body has recovered well and ovarian function resumes earlier, pregnancy might occur. However, if breastfeeding frequency is high and ovulation has not yet resumed, pregnancy generally won't occur. Detailed analysis is as follows:

During lactation, women have relatively high levels of prolactin, which inhibits estrogen secretion and ovarian ovulation, thereby delaying menstruation. However, this inhibitory effect isn't absolute. If a woman's body recovers quickly and ovarian function resumes earlier, ovulation might resume prematurely. Even if menstruation hasn't resumed, if ovulation occurs and unprotected sexual intercourse takes place around the ovulation period, sperm and eggs might combine and result in pregnancy.

If a woman breastfeeds frequently, maintaining consistently high prolactin secretion, ovarian function will be significantly suppressed, preventing follicles from maturing and ovulating, and the endometrium remains thin, making the conditions necessary for conception absent. In such cases, pregnancy generally won't occur.

If there is no desire for pregnancy, it is recommended to use effective contraceptive measures during sexual activity to reduce the risk of pregnancy.