Women with unstable menstruation are less likely to get pregnant. Menstruation is regulated by the hormone levels in the body, and the hormone levels in the body of patients with unstable menstruation are also unstable. Unstable hormone levels indicate that the ovaries are not functioning particularly well, and in this case the probability of pregnancy decreases. In women with unstable menstruation, ovulation is not very regular and some patients have polycystic ovary syndrome, which can lead to non-ovulation or poor egg quality. Regular menstruation and normal hormone levels are essential for pregnancy. For women with unstable menstruation who want to prepare for pregnancy, it is recommended to adjust the menstrual cycle first, and it will be better to prepare for pregnancy after the menstrual cycle is stable. If the menstruation is unstable, it is not good for the woman’s own health condition, and it is easy to cause endocrine disorder, which should be treated actively.