Inclusion Criteria:  Crampy pain in the lower abdomen or lumbo-pelvic area between 8 hours and 4 days after menstrual bleeding. Clinical evolution of at least three menstrual cycles with said pathology. Moderate menstrual pain or severe intensity, minimum 5 VAS scale. Regular menstrual cycle, between 21 and 35 days. Accept informed consent.  Exclusion Criteria:  Being receiving any other physiotherapeutic or pharmacological treatment for primary dysmenorrhea during the 3 weeks prior to the beginning of the intervention. Suffering from cardiovascular diseases, prolapse, amenorrhea, hemophilia, tumor or infectious processes, use of IUDs, consumption of oral contraceptives or suffering from any injury that affects the sensory-motor function.