Endometrial polyps do not usually form within a short period of time, but usually take more than six months to form. The formation of endometrial polyps can be caused by a variety of reasons, on the one hand, it may be caused by cervicitis chronic repeated stimulation, the degree of inflammation is different for each person, so in the case of prolonged inflammation stimulation, endometrial polyps may be formed slowly, usually will not be formed within a short period of time. The formation of endometrial polyps is also related to endocrine disorders to a certain extent, high estrogen levels may also cause polyps to overgrowth, polyps can appear in the endometrium of the female uterus, through the examination of the uterine cavity may be found to have limited endometrial swelling, usually takes more than six months to form. Consult your doctor for more information.