Having an upset stomach when you're not sick could be due to a food intolerance, eating too much, eating something that didn't agree with your stomach or other digestive issues.
Eating too much, eating too fast, or eating certain foods or even drinking too much caffeine or alcohol can cause an upset stomach.
Other things that can cause an upset stomach are feeling stressed, indigestion, constipation, diarrhea, food allergies or even food poisoning.
Inflammation in the stomach or a peptic ulcer, GERD, gallstones, pancreatitis or a urinary tract infection could cause an upset stomach.
If you're female you could have an upset stomach due to ovulation, inflammation of the reproductive organs or menstrual cramps.
Stress and anxiety can also cause stomach upset and other gastrointestinal symptoms.
IBS can also affect the stomach and cause stomach upset and affect the function of your bowels.
Or you could be lactose intolerant and have trouble trouble breaking down the lactose which is the the sugar in milk and other dairy products.
Most cases of upset stomachs are nothing serious and usually resolve on their own within a few days or so.
However sometimes it may be more serious and you may need to see a doctor or go to the hospital or urgent care.
You should see a doctor for the upset stomach if you have persistent symptoms, you regularly have an upset stomach, you have symptoms of a bowel obstruction like the inability to pass gas and constipation or you have any symptoms of dehydration like vomiting and diarrhea.
Taking some Pepto Bismol or drinking some Ginger Tea, Chamomile Tea or other herbal teas can help relieve an upset stomach.
Drinking 7 Up can also help relieve the upset stomach as well.