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I'm so sorry to hear of your discomfort. I will do whatever I can to help answer your questions
Yes,the symptoms you are having can be due to a condition called gastroenteritis what you call as stomach flu. Gastroenteritis is the irritation and inflammation of the digestive tract.
Its most common causes are:Food poisoning, viral
infections, food allergies, improper diet, and intestinal parasites or bacterial infections.
The tiredness,lethargy,sleeping constantly,loss of appetite,gas can be due to this food poisoning/parasite/bacterial infection.
Although you had a Ct scan. chest Xray, & a Barium X-ray with normal reports other then barium results awaited,I advise you to make an appointment with your gastro doctor to have stool test & a colonoscopy.Antibiotics may be prescribed accordingly.
Till then take tab meclizine hydrochloride(brand name: Dramamine).This will help you greatly in stopping the nausea & vomiting.Take tab.Ranitidine
(Zantac) 150 mg twice a day to get relief from gastric trouble/gas.
Hope this helped.
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