Women can determine whether ovulation has occurred through changes in secretions, changes in body temperature, ovulation test strips and follicle monitoring. 1. Changes in secretions: When a woman ovulates, her secretions are different from her usual secretions, which appear as colorless, transparent, and pulsatile leukorrhea; if you find this kind of secretion, it means that ovulation occurs in the vicinity of this day. 2. Temperature changes: After ovulation, a woman’s body temperature usually rises by 0.1℃-0.3℃. Women can observe the changes in body temperature by taking the temperature every morning when they wake up. When the body temperature rises significantly, it indicates that ovulation has occurred. 4. Ovulation test paper: women can use test paper to monitor near the ovulation period, if the test paper shows two bars and the color is the same dark indicates that ovulation has occurred. 3. Follicle monitoring: this is through the ultrasound way to observe the follicle changes to determine the occurrence of ovulation, this method is the most accurate, you can observe the follicle’s growth rate and whether or not to discharge and other phenomena to judge, if the first of the two observations of the first follicle is larger, and the second time no follicle is found, it means that ovulation occurs in this period of time. If you want to know whether ovulation occurs, you need to go to the hospital for an ultrasound to observe the follicle pattern, and if you are planning to get pregnant, the possibility of having sex during the ovulation period to conceive is the greatest.