Talk to Gastroenterologist on Stomach Problem+Headache

I'm experiencing stomach issues since 2 months (which includes bloating, ges, indigestion) off and on (not on regular basis) often associated with light to moderate persistent Stress headache (forehead seems cold, cold sweats on forehead, whole body becomes energy less) sometimes stomach seems ok, but headache starts and then stomach bloating, ges, nausea starts.

headache happens almost once fortnightly. now my question is, which doctor should I seek consultation with: gastroenterologist or general physician what labs to be done????