OMG i might have to have a ceserean baby breech!!?

im so freaking out im 37 1/2 weeks preg they tried to turn the baby today with no luck i go back in a week if she still hasnt turned i will be having a ceserean when im 39 weeks is it painfull ? how much pain will i be in afterwards ?im just really scared this is my first baby so i dont know what to expect any answers will be great thankyou :0)