Hmm, doesn't sound like appendicitis to me, based on what you said.
What Are the Symptoms of Appendicitis?
The classic symptoms of appendicitis are abdominal pain and loss of appetite. Abdominal pain usually begins in the center of the abdomen, around the area of the navel. Later, the pain may move downward and to the right, to an area called McBurney's point, which roughly corresponds to the location of the appendix in the lower right portion of the abdomen.
After abdominal pain begins, a person with appendicitis may develop a slight fever, lose his appetite, feel nauseated, and vomit. The fact that abdominal pain begins before nausea and vomiting, rather than after, is one clue that the problem might be appendicitis rather than a gastrointestinal infection.
Of course if you have any doubt at all go see a doctor.