My 17 year old daughter is having mild tenderness in her belly button and just to the right of it. she only feels it when she touches it or lays on her stomach. she has no other symptoms.

Be careful: Although there are many things that can cause pain such as this, pain in the middle and right side of the abdomen in a young person is one of the primary symptoms of appendicitis. Usually the tenderness is not mild with appendicitis, but if her symptoms worsen or persist, she should be seen in the emergency room. Otherwise, she should see her regular doctor when she can. Good luck.