Chest bone popping out (Pec area)+Pain in rhomboid muscle extending to the arm

Hi there,

This have been worrying me a lot and i have went to several physiotherapists explaining to them that i have been having a tight pec minor on my left side only that looked imbalanced than the right. I have then encountered some pain in the same left side and it was my rhomboid (lats) and this was extending to my left arm where its feeling weak and whenever i do any stretching it can feel nerve pain/disorder reaching to my fingers. This has been ongoing for 3 to 4 months and it doesn't get any better. Only advise from the physiotherapist i got was to start massaging the area of pain with a foam ball/lacrosse ball after doing the physio treatment and then hitting the gym for working out with weights. I have just been going through the first step and it was not improving.

May I note that i have experienced all this due to bad posture and spending lots of hours on my desk at work + using mobile etc. I know this pain starts developing after some years and then it hits you hard where it feels so annoying that it wont go away easily.

Now my main concern out of all this, is that i have some sort of bone popping out in my chest area (also on the left) it maybe the collar bone or i am not sure what it is. It is making my left pec area look tight and its sort of a hump/mass. It is painless and doesn't affect me in anything, but when i do touch it i can feel it popped out (its a long muscle) and when i touch my right one it seems normal and flat. I was thinking this is stiffness/tightness in the pec minor but i maybe wrong and its something completely different. I hope this is clear to all of you and i require your immediate help. Can anyone please advise me if this is something serious? Maybe this back/arm pain is because of it. I also walk as if i am pressing on my shoulder and my arm is not relaxed making it look imbalanced as the other side where my shoulder is relaxed and normal. I have recently went to a doctor and he advised me that you may have inflammation in the rotator cuff, I in my opinion also thought that it has to do with nerves damaged in this area making it very annoying to me. Kindly help me as I am getting worried this will be ongoing for longer time.