I used to get cramps so bad I couldn't walk. I used to take either 3 advil every 3 hrs, or 2 advil, wait two hours, 1 advil, wait two hours 2 advil. Didn't solve the problem, but I could then walk. I'm not necessarily suggesting you do this because it can be bad for your stomach/liver, but I did it for many years and didn't suffer any long term effects. Probably taking one more motrin isn't going to hurt you, and may help. Another one thats supposed to work is Aleve. Didn't for me, but it does for some. Other than the analgesic, curling up in a fetal position with a heating pad is the only thing that helped at all. I've heard that orgasm can help relieve cramping, you can take that information where you like.. Since I went on birth control (because my periods were so bad), I've not needed more than two advil once for my period. Its amazing. Try to stay relaxed too. Being tense only makes it worse.