If you want to know whether you are ovulating or not, you can do the following methods: 1. You can take a temperature measurement, as many people experience an increase in body temperature during ovulation, but the increase in body temperature is not too large, about 0.3-0.5°C. 2. You can go to the hospital for an ultrasound test, which can determine whether ovulation has occurred. Ovulation usually starts around the 12th day after the end of menstruation, so you can monitor it at this time. The size of the follicle can be monitored to determine if ovulation is occurring, generally when the follicle is 18-22mm, ovulation will occur. 3, you can also observe your body performance symptoms, some women may have white belt pulling symptoms during ovulation, but not all women will have this performance.