Is endometrial thickening a symptom of pregnancy?

Pregnancy can cause endometrial thickening, but endometrial thickening is not a characteristic symptom of pregnancy. After pregnancy, due to increased estrogen and progesterone levels in the body, the endometrium thickens, and the thickened endometrium is conducive to implantation and development of fertilized eggs. For postmenopausal women or fertile women, no pregnancy will also cause endometrial thickening, generally this situation is pathological, need to rule out endometrial polyps or endometrial lesions caused by endometrial thickening, this situation needs to be actively treated.