Psychological or Clinical Problem. Much?

I have a persistent feeling of something getting pulled in middle of my stomach (between both ribs) with heavy breathing. Have got Troponin, Stress echo, chest X-ray, lungs test done with all ok reports. It's been over 2 months now but I still feel the same. Have consulted both cardiologist, Pulmonologist. To give a history here, I have been taking Tolol xr25 for high BP for last one year or so. Also, Have taken gastritis medication like Pan-D and few others multiple times as adviced by the physician for 10-20-30 days but this issue still remains. Sometimes I experience my hands are shaking, feel lethargic during most of the day. Sugar levels are Fasting: 70-80 and PP: 90-105 My Bilirubin level are always high ranging between 1.6 to 1.8 mg/dL, however SGOT and SGPT are normal. My attention is continuously on the stomach because of this. Is it something to do with psychological problem. Am I thinking too much? Pls advice.