Hello, And Thank You Very Much For Reading This At

Hello, and thank you very much for reading this at an ungodly hour. I've been having dull and sometimes sharp pains in my navel-abdomename region for the past two weeks and it's been on and off. Last Friday a doctor checked for rebound tenderness and did a UA and pronounced me to be healthy, no swelling or fever or anything really out of the ordinary. But the pain is still there, and my period has started; normally my cramps are ungodly painful, but I haven't had any at all since it's started; only the pain, and it really isn't all that painful. Could it really be appendicitis?