Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain sore throat, sore tongue and 
swollen lymph nodes can be due to reasons like throat  infection caused by bacteria or virus, 
post nasal drip, sinusitis, upper 
respiratory tract infection, acid reflux etc..
I would suggest you to consult an Oral Physician and get evaluated and a thorough clinical evaluation and investigations like Throat swab culture, upper G.I endoscopy can help in confirmation..
In case if there is infection antibiotics, anti-inflammatory painkillers and warm saline gargles can be advises..
In case of acid reflux, proton pump inhibitors like Pantoprazole can be advised..
For sore and 
swollen tongue you can do gargle with a numbing mouthwash containing Lignocaine and take 
multivitamin supplements..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..