Endometrial thickening if the doctor allows progesterone, you can start taking progesterone orally in the second half of the menstrual cycle. You can take progesterone capsules orally, which is a particulate, all-natural preparation with relatively few side effects. Progesterone capsules can be taken orally 100mg twice a day for 10 days. After stopping the medication, menstrual flow will occur, usually within 3-7 days of menstruation, and ultrasound can be performed again to understand the thickness of the endometrium. Because progesterone can play a diagnostic scraping role, it can reverse the thickened endometrium and make the endometrium thinner. If it is the ultrasound suggesting that the endometrium is back to normal and there is no abnormal uterine bleeding you can take the medicine to stop. If the endometrial lining is thickened, three consecutive cycles of treatment can be taken in the second half of the menstrual cycle, and the ultrasound can be repeated after the treatment.