So I've had some stomach cramping for almost 3 days now, the pain comes and goes and it has been getting better....but it isn't gone. I started with extreme cramping and diarrhea on Wednesday night and it subsided a little yesterday morning. Today, the pain is almost gone but now I am constipated.

I haven't eaten anything except soup and soda or anything, just water. I feel like the only thing that relieves the cramping is belching. I sound like a maniac just burping all day.

Is this just a simple stomach bug or could it be something worse? Should I see a doctor or just let it run its course?