hi there, as you have rightly pointed you may be getting these symptoms due to acid reflux
which could in turn be aggravated by stress
. None the less if you are over forty,postmenopausal or type A personality person it would be also a good practise to get a total body check up done which includes routine blood test
,urine exam, x-ray chest,ECG, USG abdomen to rule out any underlying cause. Depending on the test results you may need to do any specialized tests if any. Take care.