hello dear, hiccoughs are due to the following reasons: Idiopathic, that is without any cause,most common, then due to renal,kidney
disorders, but then u will also have a dry brown tongue,then in liver
disorders, and in abdominal conditions, such as the ones that u have .Due to gaseous distention, ur diaphragms nerve
gets irritated and u get hiccups.
Try homoeopathic medicine lycopodium 200 daily for 3 days, 4 pills, will greatly relieve.