Suggest Treatment For Painful Menstruation

I have very painful menstrual periods. i suffer from bad nausea, rambling gas in lower abdomin and pain in stomach n legs. the pain shifts around the stomach and ramblinjg gas makes me very uncomfortable. i am patient of rheumatoid arthritis and regularly take pain killers but just before mensus my symptoms become acute and makes me miserable. what should i do to relieve menstrual symptoms?