A complete clinical examination may be necessary for accurate diagnosis and management. Your symptoms may be suggestive of gastritis or appendictis . Few other conditions that mimic appendicitis are Meckel's diverticulitis, PID, inflammatory diseases of the right upper abdomen like perforated duodenal ulcer, gall baldder disease, liver abscess etc.Right-sided diverticulitis and kidney diseases also present with similar symptoms.. A physical examination and ultrasound may be necessary for correct diagnosis and management. See a doctor. Treatment will depend on the underlying cause.
Best luck and regards!