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This could be from Anxiety
at seeing the doctor - "White Coat" hypertension
Make sure it is normal at other times - Ambulatory monitoring may be useful.
Even this elevation is not very high...
You should get investigated for other possible risk factors...
You must make serious efforts to reduce your weight...
You have not stated your personal habits, family history or co-morbidities, even age, gender...they could have an influence on the diagnosis and outcome...
Wishing speedy recovery