Birth scene in The Crown

[Thirtyrock39]

Just watching season 2 of the crown and found the birth scene quite disturbing and confusing - how on earth did they deliver the baby with forceps if she was unconscious ? And was this standard practise for the aristocracy ? Can't understand how she would have dilated etc ??

Your body still responds whether you’re awake or not

There's been lots of threads about this - it's called a Twilight Sleep. Betty Draper gives birth to her third son Gene in Mad Men the same way. (Episode titled The Fog.)

I'll look up the other threads thanks
I'm intrigued by the whole thing