Patient's question:
Liu 28Menstruated on May 22nd, did an ultrasound on June 30th, the endometrium was 0.5cm, the doctor said it was thin, and menstruation hasn't come yet. How thick does it need to be to have a menstrual period?
Doctor's answer:
The thickness of the endometrium is related to the menstrual cycle. On days 5-7 of the menstrual cycle, it is about 1-2 mm. On days 11-14, it is about 3-5 mm. During ovulation, it is about 8-9 mm. One to two days after ovulation, it is about 11-12 mm. Before menstruation, it is approximately 15-19 mm. Compare this and see, so generally, the examination of the endometrium is most accurate 2 to 3 days before menstruation.