Nikkor 18-55mm GII won't zoom?

My Nikkor 18-55mm randomly decided not to allow me to adjust the zoom ring lower than 55mm. The focus ring works just fine, in both manual and automatic zoom. I know it is not the body because I used my roommates 18-55mm and his zoom lens which both worked normally. I last used my camera on saturday afternoon. I put it back into my bag on saturday and it has been there since then. Any ideas?

Seems like it have been damged by someone, you need to take it to shop to know it will repair or not