Generally speaking, a woman’s endometrial thickness is around 8mm, or more than 8mm, for normal conception to be possible. If at any stage of the menstrual cycle, ultrasound indicates that the thickness of the endometrium is less than 6mm, suggesting that the endometrium is relatively thin, it is not easy to conceive, or pregnancy may cause fetal arrest or preterm miscarriage. However, a very thick endometrium is also not easy to get pregnant. For example, if the thickness of the endometrium is more than 12mm, it often indicates that there is an abnormality in the estrogen level in the woman’s body, which makes it difficult for her to get pregnant. So the endometrium is not as thick as it is easy to get pregnant, nor is it as thin as it is easy to get pregnant, but it has a thickness that makes it easier to get pregnant, which is about 8mm. In fact, when it is around 8mm, it is exactly the time when women ovulate, when there is normal ovulation, and it is also the easiest time to get pregnant.