Humilated new mother Emma Johnson gave birth in a hallway at the Princess Royal Hospital in Haywards Heath, West Sussex.
She plans to make an official complaint to NHS bosses after being turned away from two hospitals by staff who claimed there were "no beds available".
Miss Johnson and boyfriend Edward Prior, 23, called at her local hospital - the Royal Sussex in Brighton, after she went into labour at 1.15am on Tuesday, but the couple were told there were no beds.
They then went to Worthing Hosptial - but were again told there was no room, before the unconventional and uncomfortable birth at the Princess Royal - 20 miles away from the couple's Brighton home.
Miss Johnson said today : "I feel really cross about it.
"We could have gone to the Royal Sussex Hospital in Brighton in about 10 minutes and then we wouldn't have had all this.
"The staff were nice once we arrived but this shouldn't have happened in the first place.
"It was extra stress for me at an already difficult time."