It is not normal for a woman to experience perineal swelling when she is not menstruating. I. It may be related to the presence of vaginal inflammation, endometrial inflammation and pelvic inflammatory disease in women. Second, when a woman has a large vestibular gland cyst or vulvar mass in her vulva, she will also experience perineal swelling. Be sure to go to the hospital for examination and treatment and use medication or surgery depending on the condition. If a woman has perineal swelling after pregnancy, she needs to go to the hospital to have blood tests for chorionic gonadotropin and progesterone levels and ultrasound examinations, and if she is found to have preterm abortion, she needs to take bed rest and be given chorionic gonadotropin or progesterone drugs for fetal preservation.