Since your ECGs, blood tests and chest x-rays are normal; diseases of the heart and lungs are ruled out.
Your symptoms are suggestive of;
1) Esophageal spasm
2) Hiatal hernia
3) Acid reflux.
The following investigations are advised for the diagnosis;
1) Upper GI endoscopy
2) 24 hours esophageal pH estimation
3) Esophageal manometry.
Following treatment may help you;
a) Calcium channel blockers (diltiazem, nifedipine) decrease the spasm and improve the movements of the esophagus.
b) Relaxation techniques.
c) Esophageal spasm and esophageal movement disorder (dysmotility) often show a good response to antireflux therapy,
d) Reassurance and control of anxiety are extremely important.
Anti-acid-reflux therapy is;
1) antacids; Maalox/Tums
2) acid blocker; Lansoprazole/Prilosec/Nexium
3) losing weight.
4) avoid alcohol, citrus fruits, juices, chocolate, and tomato-based products
5) avoid large meals. Eat 5 small meals in a day.
6) wait three hours after the meal before you sleep.
7) elevate the head end of the bed by 8 inches.
I hope your symptoms resolve soon.
I would be happy to assist you further if you need any more information.
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