Hi welcome to health care magic forum. Your symptoms are a cycle of events, everything related to each other. Head ache causes vomiting and belching
, vomiting causes belchlng and head ache, gastric symptoms if neglected causes belching and head ache. at the same time it may not be true with all.
The causes of head ache may be sinusitis
, mental tension, fever, refractive error
of the eye, etc. the causes of gastric symptoms are indigestion
, peptic ulcer
, excess use of spices, chillies, junk foods, and oily foods.
I advise you to consult a physician for diagnosis and treatment. Wishing for a quick recovery and thanks for calling.