Am I ovulating? Is ovulation normal? When exactly do I ovulate? Is the mobile app accurate? For women who do not have fertility requirements, knowing whether they have normal ovulation can determine whether their menstruation is normal or not. For women with fertility requirements, monitoring ovulation and guiding coitus is a more accurate method of preparing for pregnancy, which can shorten the time for trying to conceive. For people with regular menstrual cycles, ovulation usually occurs about two weeks before the next period, how do you know when you are ovulating? There are four popular methods: basal body temperature, urine ovulation peak measurement, observation of cervical mucus and ultrasound monitoring. First, the basal body temperature measurement method The basal body temperature usually rises about 0.5 ℃ after ovulation, lasting about two weeks. Advantages: It is a simple and easy classic method, the change of basal body temperature can tell us whether there is ovulation and how the corpus luteum functions. Disadvantages: the body temperature only begins to rise after ovulation, used to guide the pregnancy lag, and need to insist on measuring every day, easy to interrupt, subject to the physical condition of the test method is more affected. Second, ovulation test paper method Use test paper to detect the peak of ovulation, when the peak of ovulation is detected, the follicle will generally be discharged within two days. Advantages: more timely, more accurate in most cases, simple and easy to implement. Disadvantages: there may be false positives, especially in the case of irregular menstruation, there are also times when there is always a shallow bar, a weak positive, which lasts for a long time, in which case there may be other problems, such as polycystic ovary syndrome, and there may also be ovulation disorders, where the follicle develops normally, and the urine LH can be detected as going from positive to negative but the follicle has not been discharged, and in which case you should go to a specialized clinic for further evaluation. These cases must go to a specialized clinic for further evaluation. Third, the leukorrhea observation method Observation of cervical mucus to determine the date of ovulation and guide coitus is also an effective method, even better than the first two methods, with the follicular development of estrogen rises, mucus increased to the peak of the ovulation day 2-3 days, when the mucus is more clear and transparent and was filamentous when the chances of conception are greatest. Advantages: easy to use, easy to understand, more accurate, reflecting the hormonal changes in the body. Disadvantages: the same as the first two methods, observe the changes in the white belt can not indicate whether the follicle is discharged. Ultrasound monitoring Ultrasound monitoring of ovulation generally from the 8th to 10th day of the menstrual cycle, through ultrasound to monitor the follicle from small to large and ultimately discharged, combined with the results of the blood and urine test comprehensive assessment, a cycle if the cycle is smooth need to be monitored 3-5 times. Advantages: The most accurate and comprehensive way to detect whether the follicle has been normally ovulated. Disadvantages: It must be done in a specialized outpatient clinic and requires repeated visits to the hospital, which is cumbersome and costly compared to other methods.