Can anyone help? My sister has been having really bad periods for ages. She was finally scheduled for an investigative operation last week and, alas the Doctors found nothing 'unusual'. She is in her mid 20's and has no children. Her periods are not regular, are mostly very heavy and always painful (sometimes doubling her up with pain)... She has tried period pain-killers and evening primrose oil. I think she needs to overhaul her diet to include more b-vit rich foods and perhaps more iron. Any advice please, the poor girl is at her wits end. x