There are three common causes of the type of diarrhea and cramps that you are suffering from:
1. IBS or Irritable Bowel Syndrome - This is a condition where the bowel tends to react to any food or drink by cramping, and loose stools. The sufferer has abdominal bloating, nausea, pain and diarrhea and constipation from time to time. The exact cause is not known. But it is believed to be due to a very sensitive bowel that reacts to certain food. It is basically harmless and does not damage the gut, but it is very distressing for the sufferer. To know more, please see:
2. Crohn's disease: This is a condition where there is inflammation of the gut with minute ulcers inside the gut. To know more, please see:
3. Infection by organisms like ameba's : Especially organisms like E. Histolytica.
Please consult a gastro-enterologist. You will need investigations like stool exam in a lab, colonoscopy and Ba enema Xray for an accurate diagnosis.
As an immediate home treatment, please take Immodium tablets, a high fibre substance like Psyllium husk to bind the stool, and enough fluids to prevent dehydration. Gas can be controlled by GasX tablets. All the medicines are available OTC.
I hope this helps.
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