It's normal to have palpable submandibular lymph nodes.
Just closely observe primary intraoral area for any changes.
Next Steps
"Oral Submucous Fibrosis (OSMF) – A Ghutka Chewer Disease" by Dr. Sanjog Chandak - https://www.practo.com/healthfeed/oral-submucous-fibrosis-osmf-a-ghutka-chewer-disease-38912/post
go through above article.
can ask for more article, chat box.