Endometrium 7mm refers to the endometrium of the uterus of 7mm. Most people may get their period in about 1 week, but it cannot be excluded that a small number of people will get their period in the last few days, there are individual differences and there is no uniform standard. Usually, menstruation occurs when the endometrium is around 10mm. A menstrual cycle is divided into proliferative phase, ovulatory phase and secretory phase, and the thickness of the endometrium changes during different periods of the menstrual cycle. During the proliferative phase, the endometrium is relatively thin, with a thickness of about 2-3mm; when ovulation is reached, the thickness of the endometrium increases and can reach 5-6mm; when the secretory phase is entered, the thickness of the endometrium can grow to 8mm, and when it reaches about 10mm, menstruation can be expected. The thickness of the endometrium is 7mm, and usually, you will wait for about 1 more week to get your period. However, in some people, due to damage to the endometrium, even with more estrogen stimulation, the endometrium does not reach a certain thickness, and it may be possible to have a period when it grows to about 7mm. Therefore, the time of menstruation cannot be judged simply by the thickness of the endometrium, but must be determined in conjunction with your specific situation.