How long does the egg survive?

Dysmenorrhea can generally be divided into primary dysmenorrhea and secondary dysmenorrhea, in which primary dysmenorrhea may be caused by increased levels of endometrial prostaglandin, vasopressin and endogenous oxytocin secretion, but also may be caused by uterine dysplasia, excessive flexion or poor menstrual discharge. Secondary dysmenorrhea is clearly secondary to various gynecological diseases, specifically endometriosis, adenomyosis, cervical adhesion, pelvic congestion syndrome, etc. In addition, there are some women due to their own implanted IUD displacement or embedded in the endometrial tissue and the formation of dysmenorrhea. Therefore, obvious dysmenorrhea need to go further to the hospital to rule out whether there are pathological factors.