there are many causes for polycythemia and it could be physiological eg people living at high altitudes or pathological associated with heart
kidney etc so kindly get proper assessment done
Next Steps
hb alone does not confirm the diagnosis as other parameters need to be considered eg mcv mch etc
hence kindly attach the image of report.
Health Tips
do not worry
do not self medicate
stop exploring google as it will give you anxiety not answers, consult a doctor and you can always consult on practo for second opinions and information.