I can imagine it would be frustrating... try and hang in there as much you can and perhaps be sure to do all the 'home' remedies... many of my friends swear by the trick!

Have also heard of a few friends that have had success with the following:
- walking on the beach in the soft sand (apparently helps your pelvis get things moving)
- raspberry tea...

having not given birth myself I am only going by what others have told me... I hope one of them does the trick for you.