The seven month pregnant star, 24, was celebrating fellow cast member Harry Denbidge's 20th birthday when she says she felt a shudder come over her whole body.
'It was like my body was shutting down' explained Billie. 'I had no control over any part of me. My ears were ringing. My head hit the table and I couldn't move. Then everything went dark.'
After about five minutes, the reality star awoke and could feel rapid movement in her belly. Billie describes how she immediately panicked - knowing that her unborn child was in distress.
After refusing to be taken to A&E, the mum-to-be headed home to rest. But the next morning she awoke to find that her baby had stopped moving inside her.
'I had no control over any part of me. My ears were ringing. My head hit the table and I couldn't move. Then everything went dark.'
'I woke at 6am and couldn't feel anything. I lay there for five minutes…nothing. I drank cold water…nothing. That's when I panicked:"What if there's something wrong with the baby?"'
Luckily, after sister Sam Faiers and her boyfriend Joey Essex showed up, later followed by her mum and aunt, the baby started to move, something which Billie describes as the 'biggest relief ever.'
'Only then did I ring Greg and tell him what'd happened - he was more stressed than me. He's very protective,' she said.
Doctor's have now told the star that she has been pushing herself too hard and she must cut down on her workload ahead of the birth in two months time. They've even fitted Billie with a heart-rate monitor for 24 hours to check for an irregular heartbeat - as she keeps experiencing palpitations at night.