Hi.
Thank for your query.
Noted the history of you having lightheaded, nausea,
dizziness, stomach aches, headache, increased sense of smell.
All happening within a week.
All this can be due to constitutional infection which needs evaluation.
I would advise you the following:
Consult a Doctor for clinical evaluation, examination and investigations:
Blood tests for CBC, Widal , Malaria,
blood culture and sensitivity helps in some cases.
Tests of stool and urine.
Symptomatic treatment with PPI,
Domperidone, antibiotic as per the clinical evaluation and reports of the tests.
Additional treatment with
paracetamol, multivitamins and as needed.