My son was posterior through the entire birth and never turned. Unfortunately no-one seemed to be aware of this (despite me having very bad back pain during contractions and no strong urge to push) until I had pushed for over 2 hours and gotten no where! Anyway, he was born vaginally with the help of an episiotomy and ventouse, however they did warn me that it may not work and I might need an emerg c-section. In my situation he basically got 'stuck' because his head did not mould at all due to being the wrong way and a lack of pressure on the right spots to make it do this. I must admit I was pretty peeved about the whole situation, and would have expected someone to pick up that he was posterior. I would have liked the opportunity to try different positions to get him to move as it did result in a very long, painful labour with a lot of damage to my perenium due to ineffective pushing. Anyway, didn't write this to scare you lol! Hope it didn't, but just wanted to say I'd do everything to get bubs to move because I do believe it will make for an easier labour. HTH