Thickened endometrial stripe with some internal echogenic debris. what does this mean?

The endometrium build up in anticipation of fetal implantation everymonth cyclically based on hormone stimulation and there is denudation with debris formation if no pregnancy is why you have the blood flow with removal of the endometrial debris. The ultrasound was done probably just before a period so it is showing that the endometrium the inner linning of the uterus is still thick and may slough