If you are noticing that you are unable to wear your contacts for as long as previously due to discomfort or notice that there is mucous discharge this may be due to giant papillary conjunctivitis.
GPC is the eye's allergic reaction to either an overworn contact lens or its deposits. Your eye doctor can help treat it with either allergy drops or a low dose steroid eye drop.
If you are having any of these complaints make sure to follow up with your local eye doctor!