Hi i just recently got a sore left tonsil it's just red with no white spots i'm not sick i have no fever and no cold it hurts when i swallow

Salt water gargles: Saltwater gargles will help if for a viral sore throat. If you're not feeling better in a few days, please see your doctor. go in if you know anyone who's had strep throat recently. You don't always see white spots. However if you really don't feel sick maybe you just swallowed something and have a scratchy throat. Or could be from allergies to Pollen etc. but then you would likely have itchy eyes or stuffy nose.

Enlarged red tonsil: Tonsils are part of the immune system & can be affected by virus, bacteria, allergies. If tissue around tonsil is inflamed, see doc right away as may have peritonsillar abscess. Viral infxn (mononucleosis) usually associated w/ swollen glands. Allergies normally would affect both sides. Try gargling with warm salt water. See doc for exam for early strep throat or abscess condition & tx options.