Ibuprofen. Over the counter medications that are recommended to treat painful periods (also known as dysmenorrhea) include Ibuprofen (motrin or aleve) or pamprin or midrin. Also, decreasing your sugar intake may help. Drink lots of water. Exercise! Heating pads or warm baths will help. Taking a fish oil regularly may decrease your cramps and overall PMS symptoms. And accupuncture can help.
Stop caffiene. Exercise, birth ocntrol pills, chasteberry are options as well.