Ovulation does not occur during a woman’s pregnancy. This is due to the fact that after a woman becomes pregnant, progesterone, which is stimulated by the fetus to secrete, dominates and inhibits estrogen secretion, so she will not ovulate. Women don’t need to worry about getting pregnant again during pregnancy, as long as they do regular and good maternity checkups. When a woman is 24-28 weeks pregnant, she needs to have a four-dimensional ultrasound to check whether there is any fetal abnormality. Women must pay attention to good personal hygiene during pregnancy, wash the perineum often and change underwear frequently. Also pay attention to appropriate work, activities, do not do too strenuous exercise, to prevent trauma. Women must pay attention to a reasonable diet during pregnancy, strengthen nutrition, food should be diversified.