Please tell me, could i still wear contact lens that is already over a month?

Contact lenses: Should be disposed of on a regular basis, if you are wearing the disposable brand of lenses. Disposable lenses are either the 2-week, 1-month, or 3-month variety. You should adhere to whatever schedule your eye doctor recommends for your lenses. If you are out of lenses and you need to buy some more, then you can probably safely wear your current pair until you get some more.