pain in armpit when breathing? Excessive belching?

[barberashely]

For the past three hours ive had a pretty intense pain under my right arm. Armpit area,spreading to the side of my boob. its a dull pain but very sharp and hurts like hell when i breath deeply. I also have excessive belching so i assumed maybe trapped gas? So i took 2 gas x... nothing so far. I just need some advice because I lost my insurance due to chronic lyme disease... and im low on money. like not sure how im gonna keep my house low... I dont want an er visit for something like trapped gas. In June i had lots of testing on my heart - echo, ekg, 30 day monitor and even that showed nothing at ALL. so i dont believe its heart related. but who knows... could it be lung related? I also have anxiety disorder so i have a hard time telling when things are bad or if my anxiety is making it worse. the pain is definetly pretty intense though. i am a 24 y/o female

[barberashely]

Thank you. The pain finally subsided yesterday after taking 3 gas x .... But now this am it is back and all I've eaten is a banana. .. It's weird

[Caryopteris]

It is likely gas and/or heartburn.  I would try Ex-Lax and take a walk.