Pre-pregnancy is the period of time when the sperm and the egg have not yet met and during which the egg is discharged. During this period, women can experience the following symptoms: 1, elevated basal body temperature: after ovulation, due to the secretion of progesterone, so that the body temperature is slightly elevated after ovulation, generally the basal body temperature of women of childbearing age will be elevated by 0.2 ℃ -0.5 ℃; 2, increase in vaginal secretions: women’s vaginal secretions before ovulation is reduced, viscous and opaque, with the proximity of the period of ovulation, the vaginal secretions will increase gradually, was drawn and dilute Milky white, usually until ovulation, the amount of secretion will increase significantly, and was watery transparent clear, women will feel moist pubic area, this situation generally lasts 2-3 days; 3, breast swelling and pain: when the egg is discharged, the body’s hormone level rises, including estrogen and progesterone, estrogen can promote the proliferation of the mammary ducts, progesterone can promote the development of the mammary follicles, so in the pre-pregnancy period, the mammary gland will be Therefore, the breasts will be swollen and painful during the pre-pregnancy period. After pregnancy, the swelling and pain of the breasts will be more obvious. In addition to the above symptoms, some women may also experience a decrease in appetite, high energy, high libido, anal cramps or lower abdominal pain on one side of the body.