Sorry to hear about this problem. It is hard for me to completely understand what you are describing, but it seems that you are having a sensation of your arm muscles and your chest muscles just not quite feeling normal. So I recommend that you discuss this concern with your doctor
. There is some associated pain, but mostly it is just the abnormal and asymmetric sensation of your two arms not feeling quite right. I will try to answer that sort of question, and you can please clarify as needed with your primary doctor, who needs to know about this anyway. Asymmetric sensations in your body can come from many different things. With regards to musculoskeletal problems, it is important to know if this is an asymmetry that comes from something that you are doing (ie, do you sit in such a way that makes it difficult for your back to keep you balanced, and so you are faced with soreness and imbalanced posture for the rest of the day?) or if it comes from something anatomically/structurally different between the two sides (ie, trauma, a growth, some other injury
, etc). Speaking with your doctor will be an important way to help you get to the bottom of this. Please speak with your doctor.