Hi welcome to health care magic forum,
Thickened white patches in oral cavity called as leukoplakia
patches . Swollen gum with red lump and red hard dots called gum hyperplasia
Leukoplakia patches are premalignant lesions and seen in chronic smoker and tobacco chewer.
In my opinion avoid smoking and tobacco if you are habituated . Take medicated mouth wash and you can use a medicated oral paste for 2 to 3 days .
But if no relief than see an dentist
or an ENT Specialist
for detail examination.