Hi welcome to Health care magic forum, Your symptoms head ache, nausea
, heightened sense of smell, and fatigue
) in the first visit or in the starting stage doctors usually miss.
Other causes are headache due to any reason fever
, tension, etc may cause all these symptoms except smell change. I advise you to consult a physician for diagnosis and treatment.
Besides i advise you to follow some diet recommendations as avoid taking more of spices, chillies, junk foods, and oily foods, as these may cause gastric irritation , nausea, etc.
Wishing for a quick recovery and thanks for calling.