Yes!!!! Definitely in my neck, shoulders, upper back, and ribs (that costochondroititis thing). Yes, when I am stressed, I tighten all those muscles up and if I am not exercising regularly then I get major problems - anything from pain to tension headaches to sensations of swelling (when I feel it, it doesn't physically feel swelled) to very sore ribs. I have not sought out medical testing for any of this (I have HA and try to avoid the extra testing), however, I was seeing a massotherapist regularly and that helped alot. It made me really realize how tight my muscles were and that the problems I was having were related (they eased up as I was seeing him regularly).
I can tell you that coughing and "hacking" when you are sick will totally mess up the back/chest muscles (I had that happen too one time when I had bronchitis - and that was medically diagnosed). Plus if your were tensing your back and shoulder muscles while driving and they stayed tight (you didn't stretch them), it causes issues to your front chest muscles as well (kind of throws them out of whack since your back is - they become off balance - my masso talked to me about that). So your muscle pain makes total sense. I would work on stretching and balancing your muscles first before running off for testing - a massotherapist would probably really help you. Hope you feel better soon.