Ovulation day itself can not accurately know that the egg has been discharged, you need to go to the hospital ultrasound to confirm the diagnosis. According to the symptoms can be initially judged, such as a slight ovulation pain, basal body temperature increased 0.3 ~ 0.5 degrees, pulling like white belt, a small amount of vaginal bleeding and so on. 1. Ovulation pain: when the follicle matures and is discharged, it will pass through the follicle on the surface of the ovary, and a little fluid inside the follicle will flow into the pelvis, which will cause mild abdominal pain or a drooping sensation in the anus. 2. Basal body temperature rise: when ovulation, due to the role of progesterone in the body, the basal body temperature will rise about 0.3 to 0.5 degrees, you must test the temperature first thing in the morning. 3. Leukorrhea: When ovulation occurs, the vagina will flow out of the egg white-like leukorrhea. 4. Ovulation bleeding: due to the rise in estrogen during ovulation, when ovulation suddenly drop, the endometrium may be mildly stripped and cause a small amount of bleeding phenomenon, after ovulation progesterone timely supplementation rise, bleeding will soon stop. The above phenomena are all phenomena of ovulation, but only to estimate the egg discharge. To know clearly whether ovulation has occurred, it is best to monitor the process of follicular development and discharge of color ultrasound. If there is a need for egg monitoring, not only on the day of ovulation, but also for cyclical monitoring, please consult the hospital in time and standardize the monitoring under the guidance of the doctor.