You go months without a visit from Aunt Flo. Then – BOOM – she arrives with a vengeance, bringing with her the kind of full-on pelvic pain that makes you want to assume the fetal position and cry for mercy. Irregular, painful periods are unfortunately becoming commonplace for a lot of women. When you have PCOS, it’s almost a given. Evening Primrose Oil is known for its effectiveness at reducing period pain and getting periods on a more predictable cycle. Ladies who are trying to get a little more regulated to improve their chances of conceiving may want to add this as part of their care routine.