I dont want an operation?

so yeah as you no im going to have an cerjury,operation for my lungs im only 12 im scared so is my mom and dad there very scared so let me tell you the whole thing i was sleeping in a hotel with my little brother and my mom was there to while i was sleeping my mom heard weard noses from my breathing so my dad imediatly called the hospital for a appontment and the doctor said that half of my lungs dont work and if they dont do the operation i might not survive and.......so my mom was worried and upset and she started to be very nice to me and then she told my dad ill take the operation and they just told me im scared help