7. Indigestion, Nausea, and Vomiting
Older people are more at risk for indigestion, so it can be hard to figure out a reason. There are a lot of causes for these symptoms. Nausea and vomiting also have many causes.
You might also feel full but on an empty stomach. All these symptoms occur because your digestive system is getting less blood and not working regularly. However, one of these in conjunction with another symptom warrant a visit to the ER.
6. Shortness of Breath or Exhaustion
If you are having shortness of breath for no reason, you might be suffering a heart attack. Shortness of breath that has a sudden onset and occurs without exertion should be checked out.
Women, in particular, may experience exhaustion or unexplained weakness. You may experience exhaustion or fatigue when trying to complete a task that is generally easy.
You may feel like you are coming down with the flu. Any changes that occur without warning should be checked out.