Hello There can be 2 probabilities in your case 1. Acid peptic disease 2. Gall bladder pathology Acid peptic disease may only sometimes present with pain abdomen. Other symptoms like nausea, bloating, post food fullness, vomiting may or may be not there. It requires upper Gastrointestinal endoscopy for confirmation. It is not normally picked up by X-ray, CT scan or MRI. Gall bladder pathology is less likely, as it would have been picked up by CT scan. I normally do ultrasound scan on empty stomach to know the gall bladder it s full in fasting state and followed by repeat scan after having fatty meal- normally the gall bladder should have contracted after food. Lack of contractility would warrant further workup. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. Take care.