When a woman enters ovulation, a series of changes in her body will be caused by changes in her hormone levels, including decreased appetite, high energy, high sexual desire, decreased resistance, anal swelling, mild abdominal pain, excessive leukorrhea, and stretched leukorrhea. The main reason for the decrease in appetite and high energy is due to the evolution of human beings, mainly because during the ovulation period, the main focus is on courtship, and there will be a certain degree of appetite decrease, high sexual desire is mainly caused by the increase in the level of estrogen in the body, and the main reason for the decrease in resistance is that the mucus in the nasal cavity will be significantly less and cause bacteria to invade the respiratory tract and easily cause infection. The symptoms of anal swelling and mild abdominal pain do not occur in all people and vary from person to person. During ovulation, the egg needs to break through the follicular membrane and some mild abdominal pain may occur.