Apologies for the long post, I need to let the blushes out 
I was booked for an ELCS at 38 and a half weeks but DS clearly didn't like this idea and decided to arrive naturally at 37 weeks. Everything progressed so quickly that I didn't realise what was happening until my confections were really strong and five minutes apart. DH called an ambulance because I couldn't get to hospital without pain relief and by the time the paramedics arrived with the magical Entonox I was making a reasonable amount lot of noise, mostly due to the pain but also because I was really frightened.
We live in a semi detached house and the walls aren't all that thick but disturbing the neighbours was the last thing on my mind.
DS arrived safely (after arriving at hospital with his head mostly delivered) and DH went home to collect a few things. Next door neighbour came to ask how everything had gone and apparently was very diplomatic about the noise, saying they'd had no idea anything was happening until they saw the ambulance. At this point her little boy looked very confused and piped up 'But Mummy I heard ALL the screaming' 
Little boy has just gone past my (open) window with his, pointed at the house and said 'That's where screamy lady lives'.