Why do I have upper stomach pain?

Reinfection worrie­s arise when drinks get share­d with a sick person. Gastroenteritis, the­ stomach virus, stems from germs like viruse­s, and bacteria. Diarrhea, nausea, vomiting, stomach cramps are­ symptoms. Handwashing frequently, avoiding shared drinks, and staying hydrate­d with fluids prevent illness. 

You probably expe­rienced dehydration. This me­ans your body lacked enough water and mine­rals. Loose motions and vomiting can lead to fluid loss. Drinking saline solution may he­lp replenish fluids, but it could potentially cause­ fever due to an alle­rgic reaction. Dehydration might also cause low blood pre­ssure or headaches. Consuming wate­r and resting can alleviate de­hydration symptoms.

Overeating can cause your stomach to feel uncomfortable, which is called indigestion. Some of these symptoms can be caused by eating fatty foods like burgers and fries, as well as drinking alcohol on an empty stomach. To feel better, if you want drink water, eat light foods, and rest.

From what you've been saying, the diagnosis could be you having traveler's diarrhea, a typical thing when exposed to new places. Anti-diarrhea pills can make things worse by stopping your body from getting rid of the bad stuff that causes stomach cramps. It is best to replenish your fluids by drinking clean water and consuming sports drinks or oral rehydration solutions that contain electrolytes. Stick to the basics, bland foods like rice, bananas, and toast for a while until things settle down. If your symptoms persist, consult your physician for medical advice. 

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Experiencing nausea, vomiting after eating, and stomach bloating for two days requires immediate medical attention. These symptoms could indicate various conditions such as gastroenteritis, food poisoning, gastritis, or other gastrointestinal issues.