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The chilling feeling and the pain in the left side of the abdomen can have many causes with acid reflux being a major cause. Acid reflux results from gastroesophageal reflux disease
, peptic ulcer
amongst a host of other reasons. Hiatus hernia
also is a condition which frequently contributes to acid reflux.You could try taking the antacid ENO dissolved in water whenever the symptoms get worse. However, as a precaution, I would also advise you to get an electrocardiogram (ECG) done to rule out possible heart disease
which sometimes mimics this condition.