2 months ago i had strep throat i took some antibiotics and it went away.. now one tonsil is swollen. should i be concerned?

Strep throat: The strep throat that you had 2 months ago that was treated has really nothing to do with your current illness. I would go have your new tonsillitis looked at to see if it is viral or bacterial.

Swollen tonsil?: How do you know for sure your tonsil is swollen and that may not indicate a disease process. What is going on? once treated for strep you should be OK unless other symptoms have occurred?

Possible new case: While you were successful in treating your previous Strep throat, a new case can always occur if you are exposed to a sick contact (especially a child). Please go to your primary care doctor for a Strep test and possible repeat antibiotic treatment. In addition to Strep, some particularly bothersome infections can happen behind the tonsil, pushing it forward. A good exam should handle this too :-)

Sore throat: It depends on what antibiotics you took. Also, ifyou did not change your toothbrush, you may get re-infected. Other sources of re-infection are a partner or a family member, particularly a child. You may have a new infection or a flare up if you a carrier for the strept bacteria.

Needs evaluation: Persistent asymmetric tonsillar enlargement needs evaluation by an Otolaryngologist. The reasons for asymmetry (one side bigger) include: Infection, tonsillar cryptic debris (foul smelling little tonsil "stones"), normal anatomy and/or tumor/neoplasm. Evaluation may include physical exam, palpation (touching) in the throat, biopsy, imaging study or surgical removal.