What is wrong with me?!!?!?!?

i am a drinker and a smoker. i hope this is what is causing me to feel this way. when i breathe, its kind of annoying because i feel like i have to take a deep breathe every 45 seconds to fully gain control of breathing, and when i do take those deep breaths, my right rib hurts and the right side of my shoulder blade feels like its being punctured(my lung also). its really painful. i work iin a warehouse where we constantly have to lift heavy boxes too so i think that links to it. i justt want to know the true answer. is it stress? anxiety?