As we age, the body can be very aware of its standard of health or well being vs illness or disease. Opposite of when we were younger and an upset stomach could have been from a multitude of reasons, such as anxiety, bad food, or illness such as the flu, just to name a few.

If there be no remedy why worry?

Spanish Proverb

As we age, an upset stomach could be cause for minor issues easily identified, and if severe, we have the age and wisdom to know prognosis may need medical attention. Such items could include heartburn, ulcers, reflux, or other serious conditions.

It is a good idea to pay attention to your symptoms and intuitions by seeking medical advice for anything abnormal.