I remember dreams like that! (Except I never expected my parents approval.)
The worst dream EVER came a couple of years after SRS/transition, when I was deliriously happy in my new life - I dreamed that it had all been a dream, that I was still deformed! I woke up shrieking, crying, and drenched with sweat! I think my screams woke up half the apartment building! Heck, that wasn't a dream, it was a NIGHT TERROR!