Chest tightness and tension can definitely be symptoms of anxiety and as long as there is no pain associated with them, not much to worry about. If it is constant I would bring it to the attention of my doctor. You say you're also experiencing chest congestion and a dry cough and those are NOT symptoms of anxiety and I would strongly suggest you see your doctor about that.
Peace
Greenlydia
Thank you greenlydia. I will see my GP
Good luck and do let us know what the doc said, OK?
Peace
Greenlydia
Doc was at a loss to explain?