Brief Answer:
Costochondritis or gastritis!

Detailed Answer:
Hi,
Firstly thanks for choosing health care magic for your query!
Have gone through all your details.
1)As per your question no most likely your pain is non cardiac in origin,your ecg's and Trop's were normal,Your echo and tmt test were normal.Combined together the sensitivity of tmt and 2d echo to rule out coronary artery disease is more then 85%.However for complete cardiac clearance a non invasive test called stress thallium should be done(though not indicated in your case). Stress thallium is 98% sensitive to rule out CAD.

2)Yes it could be costochondritic pain also.
Inflammation of the cartilage that connects a rib to the breastbone (sternum) causes costochondritis,and the pain is usually present at strenocostal angle(Rib and sternum junction).

The pain associated with costochondritis usually have following feature-
It usually occurs on the left side of your sternum,Pain is usually sharp, aching or pressure in nature,it affects usually more than one rib,and worsens when you take a deep breath or cough.However physical examination is necessary to make costochondritis as a diagnosis,usually your physician will look for rebound tenderness along costosternal angle which is almost always present in it.

You have a strong history of gastritis and acid peptic disorders ,endoscopy also revealed infection by H.pylori,The regimen for H.pylori is given for 3 months and should be followed as per the advice of gastroentrologist,Never stop medicines by your own other wise resistance may develop in bacteria.As you are relieved by the treatment you should continue it for atleast 3 months,Gastritis,GERD,and other acid peptic disorders mimics cardiac pain.Eating lots of fibres and vegetable also cause burping and flatulence,Restrict amount of fibres to 30gram/day.

Final note-
After going through your complete history,Most likely cause in your case is-
1)Acid peptic disorder and GERD-( For which you are on medication)
2)Costochondritis-For which physical examintion is necessary.

Advice
You can take tablet ultracet twice daily for 3 days ,if pain gets a bit better it can be costochondritis(consult your cardiologist ).

In case you have any other query feel free top ask!

Thanks

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Brief Answer:
Yes continue it for 5 days and follow up after that!

Detailed Answer:
Hello again,

Yes continue ultracet twice to thrice daily for 5 days (consult your cardiologist) , Its a very safe drug. If you are responding to this drug means that most likely its costochondritis. Ultracet is a week drug and is a drug of choice in your case as it will not increase your gastritis. However a controlled therapy with NSAID's and low dose steroids can be considered once diagnosis is confirmed.

Have a safe recovery!

Good luck.
Thanks.

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