Hi ! Possibly your pain is more on the right side for which your doctor had appendicitis in his mind. If the pain in the right side of lower abdomen, and is persisting or recurrent, then it really could be a recurrent attack of sub acute appendicitis
which can only be known by clinical examination followed by some investigations to be decided by the examining doctor. However, one has to also keep collitis in mind specially if you are a frequent visitor to hotels, and chronic infections like granulamatous intestinal infections. You can think of a muscle being pulled or strained if there is some history of lifting a heavy weight with a jerk, or any history of trauma.