Yup... I reckon it could.

Glad to hear you are feeling better, but stress can cause our stomachs to knot, our muscles to bunch, our temperature to vary from the norm and cause "delightful" headaches.

Depends how much stress you are under, and how you normally cope with stress, but yes, it could be one answer.

Don't forget stress is linked (note I say linked, not causes) many physiological symptoms... problems with livers, hearts, stomachs... all sorts.

My mum gets really achey on rainy or humid days... the weather also can affect us significantly.

I suggest a nice looooong bike ride, on a mild day.