For about 5 years now I have been experiencing pressure/ fullness under the left rib and below the sternum. But also I keep feeling the sensation of something sliding in and out of something. It has came with other symptoms such as fatigue, dizziness and tunnel vision when standing up, often can't catch my breath, difficult to swallow, pain when urinating, sharp pain that moves across the abdomen with pain in the lower back region and feeling just generally sick when I eat. When I went to the doctors they tested me for h pylori bacteria which came back negative. They sent me for chest x-ray and ultrasound which both came back negative. They started to suspect a hiatal hernia so was sent for endoscopy which came back negative. I am at a complete loss of what it can be. Quite often the pain is unbearable which results me curled in a ball on my bed crying It gets so bad. I am sick of feeling exhausted and generally unwell. Does anyone have any suggestion as to what it could be? Or has anyone had anything similar? Anything would be greatly appreciated. Thanks in advance.