Endometrial polyps can be misdiagnosed as they are caused by excessive proliferation of the endometrial lining. Clinically, the thickness of the endometrium varies throughout the menstrual cycle. Typically, just before menstruation, the endometrium is quite thick. As a result, some women might notice that their endometrium appears thick, resembling a polyp. If such a condition is observed, it is advisable to wait until after a menstrual period when the endometrium has shed before undergoing an ultrasound examination. If it is indeed an endometrial polyp, it will not shed with the menstrual flow. If it’s just thickened endometrium, it will resolve after menstruation. Therefore, it is essential to perform an ultrasound after menstruation to confirm if it is an endometrial polyp. If the polyp persists after a clean menstrual cycle, it can be diagnosed definitively.