Depends. Early appendicitis can be difficult to separate from run of the mill stomach ache however it quickly increases in severity and locates to the right lower abdomen. It also hurts when moving around.
Yes (and no) Appendicitis is a cause of abdominal pain. It may begin as a typical 'stomach ache' but soon changes (w/in 24hrs) into a very different kind of pain: sharp, constant, progressively-worsening, well-localized typically to the right lower abdomen. Left untreated, it will typically lead to rupture within a day-or-two. This is an emergency and requires emergency (room) evaluation.