but when you spot bruises on your abdomen, back, or face with no known trauma to those areas, it could signal an underlying condition, says Dr. Elliott. Also, if you never bruised easily ...

Bruising easily is often the result of taking blood-thinning medications, including ibuprofen. Other medications that can lead to more bruises are steroids like Prednisone and Hydrocortisone.

Your stomach pain might be more serious if you also have symptoms like sudden weight loss. Other indications are loss of appetite, fever, blood in your stool, or vomiting longer than 24 hours.