My Mac won't read my cd's and makes a weird noise?

I got my macbook pro in June 2012 and it was fine until recently I noticed it was not reading any CD's i would put into the CD drive. It started with me trying to watch a movie. I put the movie in and it made a weird noise and said "disc is not readable" and gave me the option to ignore or eject it. I tried multiple DVD's too. Then today I tried playing a game I always play and after I put it in the computer it said the same thing and made the same noise. It never used to do that with that CD.