That reminds me of one I will have posted here. When I had child 2, it was a bit traumatic (fast) and I had a very weird labour which lasted all of 21 minutes. There were no waves of contractions coming closer and closer together but just one long fecking contraction, with no let up. My first labour had only been an hour so they were expecting it. And had no intention of giving me any pain relief because what was the point, was the logic. So there i was in the worst pain of my life, no chance of pain relief, and I literally thought I was dying. No drugs. One brief drag of the oxygen thingy but I put it aside as it had zero effect on me, no pain relief, no altered state of mind, just useless. A friend who also had precipitate labours had told me not to bother wiht it as it was all they'd offer in that hospital and it was just a way of the other people in the room deluding themselves you were getting pain relief - and my friend was right.
And at some point, my long dead mother appeared next to me. She died when I was ten. But there she was, next to me and she said one thing:
'You're going to be alright.'
She was wearing I forget now but it was something I remember at the time (this was 25 years ago) thinking 'Oh yes, mum had those clothes!' - my conscious mind had forgotten what she wore, but then there she was, wearing clothes I'd long forgotten. She died wearing a yellow nighty! It was day clothes, though.
Then she was gone. And not long after, my baby was born.
It was only when thinking about this just now, prompted by bloop's post, I remembered my dad's last words to me when he died, ten years ago were also "You're going to be alright."
ETA: I never told my dad I "saw" my mum during one of my labours, as he'd think I was nuts. So he never knew this. Also, husband, who was with me during labour, said afterwards he could tell from my face that I had "seen" something in the room and something very "wrong" had just happened. The proverbial "You looked as though you'd just seen a ghost"! But the whole thing was so chaotic and scary he was overwhelmed and couldn't do anything. My husband was so truamatised by what he saw at that labour, and I spent most of that 21 minutes trying to reassure him, that the next time I had a baby I refused to let him be present in the delivery suite. I had three more kids but never "saw" my mum again and none of the other 4 labours were traumatic or as scary as that.
ETA 2: You're going to be alright is such a banal sentence. Imagine struggling to get all the way back from the afterlife, just to say that! And yet - it was all I wanted to hear at that moment as I really, really thought I was about to die. And it wasn't about the baby (who was also alright, or kinda, as this son turned out to have a disability or two but nothing related to his birth). But about me. Maybe a piece of my own subconscious mind, breaking away, and literally clothing itself as my mother, to reassure myself? Still weird though as it was saying the same thing to me, my dad did fifteen years later, when he died.