Hi and thanks for the query,
Its not normal after 1 month post tonsillectomy
If you are having difficulty in swallowing then you need to see your doctor and get direct or indirect laryngoscopy
done, wherein your throat will be visualised.
You may also need upper GI endoscopy
wherein your esophagus
and stomach will be visualised.
Burning in the mouth can be due to vitamin deficiencies.
Regards, Dr Kishori.