Why is my sublingual glands on the left under the tongue swollen but no pain?secondly have painless swellings inside the cheeks swollen?

Oral surgeon: Hard to say without exam. See oral surgeon ASAP to determine cause/and to treat.

Swelling in mouth: I would recommend you see a dentist or oral surgeon to have these swellings checked. You may have a blockage on the duct, it may be an abscessed tooth or something that needs to be addressed.

Need exam: You need to be seen by a Dentist to answer your questions. There are many possible reasons for swollen glands. Can also be from infected teeth or gums. Please see your Dentist.