Some of them are physiological reactions, while others are pathological manifestations, which need to be noted as follows: 1. There are no obvious clinical symptoms in daily life, which are not accompanied by symptoms such as abnormal leukorrhea, itching and odor, etc. The symptoms of stomach ache, feeling of falling down and lumbar pain which only appear during the period of ovulation are a normal physiological phenomenon, i.e., abdominal pain in the period of ovulation. This symptom is due to the mature follicle rupture ovulation process there is a small amount of follicular fluid into the pelvic cavity, stimulation of the pelvic peritoneum and caused, lasts for 1-3 days will be relieved by itself to disappear. 2, in daily life there are varying degrees of pain in the lower abdomen, lumbar pain, abnormal vaginal secretion outflow in the ovulation of this symptom aggravation, more often than not, consider that the patient suffers from chronic pelvic inflammation, cervicitis and other inflammatory gynecological disease, it is best to timely consult a doctor. It is best to go to the hospital in time to do routine laboratory examination of secretions, gynecological routine examination, ultrasonography and other clear diagnosis.