The reason for the swelling of the lower abdomen during ovulation is: 1) physiological reaction, when ovulation is accompanied by the rupture of mature follicles and the discharge of eggs, a small amount of follicular fluid will be discharged into the pelvic cavity, stimulating a sterile inflammatory reaction in the pelvic peritoneum. Some women are sensitive to this reaction and experience pain or swelling in the lower abdomen during ovulation.2. The abdomen or the soles of the feet are cold, as women’s bodies are relatively sensitive during ovulation and are susceptible to changes caused by various harmful factors. Whatever the reason for the bloated feeling in the abdomen during ovulation, it is not a big problem and can be relieved with appropriate hot compresses or massage of the lower abdomen.