Hi. Thanks for your query. Noted the history and understood the concerns. Vomiting on getting upset stomach and the cycle continuing for 6 hours is indicative of the following: It can be stress induced gastritis or IBS causing the problems. Intestinal obstruction is another possibility. Cyclical vomiting can occur in a similar way. This can be diagnosed by the following: X-ray of the abdomen in standing position, particularly on getting upset stomach can be helpful to know whether there is any intestinal obstruction or not. Upper GI endoscopy, ultrasonography may help further. Clinical evaluation, examination during attack can give a proper diagnosis along with the investigation reports and give a plan of management. It is better to get a proper diagnosis to get an appropriate management.