The character Juno had unprotected sex with her friend (?) in her lounge room chair
No, they used special effects and other things like round pothestics. The baby was real, but they used a first born by a couple somewhere who said "Sure, my newborn can be in a movie, but don't hurt...
Ellen page played Juno in the film
A teenager who gets pregnant after having sex for the first time and wanting to give the child away.