Could a 12 year old girl be pregnant even though she hasnt had sex?

Could a 12 year old girl be pregnant even though she hasnt had sex? I noticed that i'm a bit chubbier then usual and my weight has gone up 2 kgs in 1 month. I havent had sex though. Could I be pregnant?

Being pregnant requires the transfer of sperm from a male into your body. That can happen in other ways than the typical sex act however; by touching with sperm on the hands for example. If you've had absolutely no contact of any kind with male sperm, you are not pregnant.