I mean i always have a sour belch that taste like eggs and loose bowels a doctor told me to see my doctor because i have a poor digestive system.what ?

Ingigestion: Many possibilities. Perhaps you have a poor diet, or you use excessive alcohol or smoke that can be a problem. Sometimes people do not digest properly due to many factors. Occasionally a stomach infection can cause sour belching and also cause ulcers. The infection is caused by a bacteria called h. Pylori. Best thing to do is live a healthy life style and if problem persists, see your doc.