Suggest Treatment For Persistent Swollen Tonsil

I have had a swollen tonsil on the right side for well over 8 months now, maybe closer to a year even. I have no pain, no swelling anywhere else in or on my neck, and I really don t notice it or feel it. I do get tonsil stones every couple months on that side more so then on the left but the left side is completely normal with no swelling. Any info would be greatly appreciated ... thank you.