An upset stomach is a nonmedical term describing a range of gastrointestinal symptoms like gas, bloating, indigestion, heartburn, nausea, vomiting, constipation or diarrhea.
On March 29, the U.S. Food & Drug Administration authorized a second booster (fourth dose) of mRNA vaccines (Pfizer or Moderna) for people 50 years and up. The same day, Centers for Disease Control and Prevention recommended the same.
The pancreas connects to the small intestine and is located in the upper abdomen. It drains digestive enzymes into the small intestine to break down carbohydrates, proteins and fats. It also produces hormones and releases them into the blood.