Just don't care. I mean you and the Kids in your year are only 12. I don't want to be offensive or something but some People that Age are just very immature and just want to have a reason to bully. When I was 12 everyone said that I was gay just because I like Art and Singing.When they got older, they will stop to say those stupid things.Just keeep calm and actually you can just wait nine Months,then everyone will see thatyou wasn't pregnant sorry for wrong grammar if there is any