Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain a sore lump on the back of tongue along with a recent history and presently linerging symptoms of
sore throat and cough and congestion that seems to be due to viral infection..
Therfore the lump on tongue can be due to causes like inflamed Circumvallate papilla,
Pyogenic granuloma, abscess formation die to infection etc..
I would suggest you to consult an Oral Physician and get evaluated and a thorough clinical evaluation can help in diagnosis and treatment can be done accordingly..
As of now you can start gargling with warm saline solution..
Do antiseptic mouthwash gargles..
Take anti inflammatory painkiller like
Ibuprofen..
Chew a
Vitamin C pellet daily..
Avoid spicy and chilled foods and drink plenty of arm water..
Maintain a good
oral hygiene..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.