Please remember that I am not a doctor, through well informed. In my personal opinion I do not believe that a node should stay swollen for any length of time without resolution. I think if you read the past messages regarding nodes, those that were related to infections that people had, were very sore, and resolved with anitbiotics in short order. In my own case, my swollen node was painless. Your doctor should determine if you have an infection causing the swelling (blood test, etc.). But for sure, he should be determining what the cause of the swollen node is. A swollen node is a symptom, not a disease. It is the result of something else going on......
A palatine torus is a bony growth of no consequense in the palate and they are very common. They usually only cause problems for people who wear an upper denture.
Lastly, hopefully expecting something to stay wrong (and that be OK) is the incorrect mindset in my opinion.