How thick is the uterus to get pregnant?

The reproductive capacity of modern people has generally declined, which has had a significant adverse impact on their lives. The large number of fertility problems has also added considerable pressure to society. Among them, uterine problems account for the vast majority of cases, and among pregnancy problems, the most common is the substandard thickness of the uterine wall. Let’s take a look at how thick the uterus needs to be to get pregnant? I hope everyone can understand it.

The normal thickness of a woman's endometrium is 2-10 mm. Under normal circumstances, the thickness of a woman's endometrium is 8-12 mm, and the minimum cannot be less than 6 mm. Generally speaking, the thickness of the endometrium is about 10mm just after pregnancy.

The thickness of the endometrium that is conducive to conception is about 8 mm. The best time for the endometrium to be fertile is during the luteal phase.

Endometrial manifestations at different stages

The thickness of the endometrium is not a fixed value; it changes cyclically with the menstrual cycle. Taking a 28-day menstrual cycle as an example, the cyclical changes of the endometrium can be divided into three phases:

1. Thickness of the endometrium during the proliferative phase

Days 5 to 14 of the menstrual cycle correspond to the stage of follicular maturation. Endometrial glandular and stromal cells are in a proliferative state. During this period, the thickness of the endometrium increases from 0.5mm to 3-5mm. The proliferation period is divided into early, middle and late proliferation periods. In the early proliferation stage, which is 5-7 days in the menstrual cycle, the endometrium is relatively thin, only 1-2mm. The mid-proliferative phase is the 8th to 10th day of the menstrual cycle, when the endometrial glands increase in number and size. By the 11th to 14th day of the menstrual cycle, it has entered the late proliferation stage, and the endometrium further thickens to 3-5mm.

2. Secretory endometrial thickness

The menstrual secretion phase is from day 15 to day 28 of the menstrual cycle. After the corpus luteum is formed, the endometrium shows a secretory reaction under the action of progesterone. The secretory phase is also divided into three stages: early, middle and late. The endometrium increases from 5mm to 10mm, which corresponds to the luteal phase of the ovarian cycle. The early secretory period is from the 15th to the 19th day of the menstrual cycle, during which the endometrial glands are longer and more curved. The mid-secretory phase is from the 20th to the 23rd day of the menstrual cycle, and the endometrium is thicker than before and has a serrated shape. On the 24th to 28th day of the menstrual cycle, this period is the pre-menstrual period, which is equivalent to the luteal phase regression stage. The endometrium at this stage is spongy and up to 10 mm thick.

3. Endometrial thickness during menstruation

At this time, the levels of estrogen and progesterone decrease, activating the synthesis of prostaglandins in the endometrium. The degenerated and necrotic endometrium mixes with blood and is discharged to form menstrual blood. At this time, the thickness of the endometrium can reach 8-10mm.

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