The endometrium is 5 mm during ovulation

Generally speaking, the thickness of a woman’s endometrium will gradually increase before ovulation, reaching about 5 mm. This process is regulated by hormones, including estrogen and progesterone. These hormones promote the growth and thickness of the endometrium and help egg cells implant. However, if a woman's endometrium is too thin, they may not be able to reach a thickness of 5 mm, affecting implantation and fetal development.

Several factors may affect a woman's endometrial thickness, including age, health, chronic disease, malnutrition, and more. If women have chronic medical conditions or are malnourished, their uterine lining may be thinner. In addition, excessive sexual activity or high frequency of sexual intercourse may also affect a woman's endometrial thickness.

If a woman's uterine lining is too thin, she may need to take steps to improve it. For example, medication can be used to increase the thickness of the endometrium. In addition, other measures can be taken, such as increasing nutrition, improving lifestyle, reducing sexual behavior, etc.