High Calcium & Magnesium (a.k.a. Cal-mag) foods, as well as good fats like nuts & avocados, will help with many female issues, as well as cramps. Cal-mag is a muscle relaxer & pain reliever.
Cal-mag in supplementation form is so safe that even pregnant & nursing moms can take it. I recommend Cal-mag liquid or powder that you mix into liquid, so it gets into the body faster. The higher quality kind can be found in health food stores or online. I recommend going to an applied kinesiologist so she/he can test how deficient you are in Cal-mag, in order to recommend the specific amount that your body needs. "Applied kinesiology (AK) is a form of diagnosis using muscle testing as a primary feedback mechanism to examine how a person's body is functioning." from www.appliedkinesiology.com
These suggestions are just a ‘band-aid’ until you can get to a natural healthcare professional who can help you find the root cause. For example a Chiropractor helped me. He also did muscle testing/applied kinesiology, suggested supplements etc. You can see multiple natural healthcare professional for relief of menstrual pain. For example a chiropractor adjustment may be easier or hold longer after a massage.