The other day we'd been out for lunch so by dinner time I still wasn't hungry so I just had a couple of ginger biscuits with a cup of tea instead. About 20 minutes later I had the most horrible pain in my stomch (just below the breastbone) which began to creep into my sides and into my back. I was walking around tesco and I ended up crouched on the floor the pain was so bad. I had a sweat going on too at the same time. The pain lasted well over an hour until I took some co-cordimols. Since then I have had the odd stab in the stomach here and there but today, I'd just had a cheese sandwich and its coming on again.
What could be causing it??