This is Dr. David
yes, you should go to the ER
pain when you breath in the right lung could be a sign of a small blood clot or pulmonary embolism in your lungs.
they can check for this at the ER with a CT angiogram of your lungs.
you need a doctor's exam of your muscles and evaluation as well
you should got to the ER right away by ambulance or have someone bring you there
they can also check your heart with EKG and blood test to see if you are having atypical chest pains due to your heart
let me know if you have other questions.
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