From my own (anecdotal) experience, stress most definitely plays out in physical ways in your body. Throughout the day or night, you can be tightening muscles without knowing it. They can eventually fatigue and set off a chain of other muscles compensating for it, etc. They can even cramp up in ways that they push on nerves, resulting in nerve-pain symptoms. It's all fairly logical, but for some reason there's this preconception that there is absolutely no linkage between our bodies and minds, which makes people look everywhere else first. The worst cases tend to be cyclical, where your worsening symptoms add to your stress, which leads to more symptoms, etc.

The caveat is that sometimes, it's not just stress. You shouldn't neglect your symptoms, if they persist.