My left eye has been really itchy and causing problems with my contact lense, what is wrong? Am I allergic to it?

? eye infection. You may need to see your doctor. Eye infections often start in 1 eye with itching, gritty feelings, redness or discharge from the eye. When rubbing you may spread it to the other eye. Remove your lenses and clean them well or discard if they are disposable, and wear your glasses until you see md. You could trap infection behind the contac lens.