She's wrapped each time she sleeps (in a miracle blanket) and can't get out so the startle reflex isn't bothering her while she sleeps so it's not that.
It must be a dream then... or wind.... I guess I'll never know!! But she stays asleep it's so bizarre!!! I just hope tonight isn't like it was last night!!! She did it heaps last night and it's scary when you're in a nice sleep and all of a sudden without warning your baby starts screaming and crying and not just a whimper either! Cos' suddenly you have to wake yourself up to attend to them and meanwhile I'm thinking "what what, whats happened!!!???" LOL

Good to know other babies do it too then!!

Nadine - thanks for posting that article... interesting!!

Thanks girls.