Arrgh, I had to wear one all the way through my labour and birth-(they never gave me a good reasoneither- plus- my baby was moving around (and down) and the strappy-thing-part wasn't doing the trick, so a nurse chased my baby around with that stupid thing the whole time- at one point I was kneeling on the bed-trying to push-and there she is with the sodding monitor-reaching through between my legs from behind.
I was so over it.
And no fair- I went into hospital with "false labour"(felt pretty damn real to me) twice in the month before I had the real deal, and all they gave me was an asprin!!-oh no, that's not right, once it was so bad, I had the gas-then she did an internal exam and said- no, you are not dilating, there's nothing going on at all- tightly closed. I nearly hit her with the mouthpiece.
Unless your baby is practiclty the same size as you, they hardly ever induce you early. They told me my baby was big -she was about8 pounds at birth-not huge, but definately not small-i went all the way to my due date, she was born 23 minutes after midnight of the day she was due.
How much longer have you got to go? You sound so like I was !!