 This and other damage to the urethra and bladder can lead to infections and incontinence, pain during sexual intercourse and infertility.Painful periods are common because of the obstruction to the menstrual flow, and blood can stagnate in the vagina and uterus.Complete obstruction of the vagina can result in hematocolpos and hematometra (where the vagina and uterus fill with menstrual blood).