sahayog, abdominal pain doesn't necessary mean you have an appendicitis.it could be any different disorders like gastritis, pancreatitis etc ..however if you pain is on the lower right abdomen, then appendicitis could be possible although there are other disorders which causes right lower abdomen pain. The pain of appendicitis usually starts around your umbilical area after which it localizes on your right lower abdomen.There is usually associated loss of appetite and fever. Nausea, or vomiting may or may not occur.there are different signs to diagnose appendicitis.. press on your left lower abdomen and if there is more pain on your right side, it could be appendicitis.also, press on the right lower abdomen and release, if you feel pain after you release, it could be appendicits..there are other signs too..coughing can also aggrevate the pain but my advice to you is to see the doctor immediately...he will take your physical and do some blood test and diagnose accordingly...but you should see the doctor immediately cause if it is indeed appendicitis and it ruptures then you will have bigger problems.....cheers