Inclusion Criteria:  Women between the ages of 18-50 Regular menstrual cycle (24-32 days) Those who have had symptoms of primary dysmenorrhea for at least 1 year Those who have lower back pain symptoms related to menstrual pain of 5 or higher on the Visual Analysis Scale (VAS) The body mass index is between 20-30  Exclusion Criteria:  pelvic inflammatory disease uterine fibroids, polycystic ovary syndrome. Those with gynecological findings such as endometriosis Those who have used an intrauterine contraceptive device Those who took birth control pills or nonsteroidal anti-inflammatory drugs at the time of the experiment