Hi and thanks for the query,
It is possible that the ear is infected since there was pain.
You need to pay a visit to the ENT specialist
Meanwhile follow some general measures.
1) Put otrivin
or any other decongestant nose drops and follow it up with steam inhalation 3 times daily for 5 days. It will unclog the tubes that connect the ear to the nose
2) Avoid cold
foods and air conditioning.
3) Blow 2 balloons per day.
4) Keep your ears dry and do not probe your ears.
You may require an antidiotic so please visit a doctor.
Once the infection subsides the buzzing will come down.
Regards, Dr Kishori.