For the past 3 weeks my eyes have been watery, itchy, and red. how can i soothe them?

Itchy eyes: You may be suffering from allergic conjunctivitis. Try some cold compresses and zaditor (ketotifen) twice a day for 3 weeks. If you have no relief after this time, call your local ophthalmologist.

See an eye doctor: This most likely represents allergic conjunctivitis. First, determine if you have been using new detergents or fabric softeners. Any new pets? Did you move to a new locale? If over-the-counter allergy eye drops or artificial tears do not relieve you in a day or two, you should see an eye doctor.