How can I ease the pain of menstrual cramps?

Im 13. The pain is unbearable. I can hardly sit down for a few minutes. I cannot get comfy no matter how much I try. I have to pace around the room holding my lower stomach to make some pain go away for a minute or two. Ive tried taking " Midol " and I couldn't swallow anything. Im afraid it's going to come back up. Ive tried drinking some water, But, every 5 or 10 minutes I feel like im going to throw up. This is just unbearable. Please help. Thanks in advance.