Private tutor Alice Payne, 23, closed her eyes whilst lying in her hospital bed, and woke up an hour later to find that she had almost completely given birth.
The new mum, from Ashbourne, Derbyshire, gave birth to baby Phillip as she slept at Royal Derby Hospital on December 18.
After being medically induced, astounded doctors told how they watched in amazement as she slept throughout the ordeal.
Alice and her husband John, a security worker, told how they were relieved at the healthy birth of 6lbs4 Phillip, who was arriving just as Alice woke up from her kip.
The new mum said: “Because the contraction monitor wasn’t reading me properly, doctors didn’t realise that I was as far along as I actually was.
“So I was given some drugs to let me nap for a couple of hours, but thirty minutes later they realised I was ready to push.”
Alice, who says she was “completely out of it” as she gave birth, fell pregnant in April, adding that she was “intrigued” by childbirth.
But at 38 weeks pregnant, her son stopped growing in the womb, prompting doctors to medically induce her on December 16.
Although there was nothing wrong with her baby, doctors decided that it was best for Alice to give birth sooner, before things had a chance to get worse.
But after 24 hours of nothing happening, midwives injected hormones to bring on the labour, with a machine hooked up to track how strong her contractions were.
After asking for some pain relief and taking a restful nap, Alice’s body was ready to give birth, although the machine didn’t alert doctors in time.
When they realised what was happening, Alice’s doctors were worried that she was too relaxed to push and would need an emergency C-section.
However, before it came to that, husband John was on the scene, telling his sleeping wife when to push.
Incredibly, Alice responded to John’s familiar voice, and started to push in her sleep.
Before long, the amazing spectacle had attracted a crowd of nurses and midwives, who described Alice’s experience as the “weirdest thing” they had ever seen.
With just 10 minutes of the birth to go, Alice woke up, before finishing the job – and then going back to sleep for two more hours.
She says: “I remember a nurse trying to put Philip in my arms, but I was going to sleep again, only to wake up two hours later to properly meet my son.
“Though I’m pleased I missed the pain of labour, I do wish I had been more present for my first baby‘s birth.
“Now when he’s older and asks me, I’ll have to tell him I nodded off.”
We recently revealed how another mum experienced a unconventional birth, after her husband filmed the event and shared it to thousands of viewers on Facebook.