As mentioned earlier, B-ultrasound is the most intuitive to monitor ovulation. It can see how many follicles are developing in the ovary, what their size is, whether it is close to the time of ovulation, etc. However, it cannot determine whether the egg will definitely be released. .
Among several B-ultrasound methods, vaginal B-ultrasound is the most accurate. If your menstrual cycle is 30 days, the first time for B-ultrasound monitoring can be on the 13th to 15th day of the menstrual cycle, usually the 13th day of the menstrual cycle.
The development of follicles is regular. After a large number of statistics, we found that the diameter of follicles is generally about 15 mm 3 days before ovulation, 18 mm in the first 2 days, and 18 mm in the first 2 days. It reaches about 20.5 mm in 1 day.
Knowing this rule, you can calculate the ovulation day through B-ultrasound. There are also exceptions. In some people, after the follicles develop to a certain level, they do not ovulate and instead shrink; in some people, when the follicles grow to more than 20 mm, they do not ovulate, continue to grow, and finally become luteinized. These situations are abnormal and require treatment.
This article is provided by Baidu Reading and is excerpted from \”Pregnancy Can Be Simple\” Author: Feifei Mom