Hard to say here: Very likely it's some muscle tension or strain. But gall bladder pain is often felt in the right shoulder (weird, huh?). And heart pain can be felt in the arms but shouldn't just be when you lay down. I'd suggest you let your doctor check it out.
Answered 4/24/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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