I've been told similar things relating to the mucous plug... at my last visit, the RN told me that when you lose your mucous plug, the only thing it tells you/them is that you're due to deliver your baby sometime in the next 8 weeks! In other words, it really doesn't tell you much.
Course, I have to say, if my doctor told me that they would smile (sharing an inside joke) when a woman asked these questions, I might be a little annoyed with the lack of professionalism... yeah that's fine if that's true, but a LOT of woman don't realize these things and are under the impression that they are relavent to the date of delivery. I've read (and therefore thought) that when the baby drops, you can assume you're on your way there... whether it be in an hour or a week.
I totally agree with him. I find I have to be really patient answering questions about stuff like that. I feel like I'm constantly saying, "Baby will come when they come". What drives me the most crazy is people who are 32-26 weeks along and are wanting to know how to induce labor because they're already dilated.
When I asked my Doctor if he could tell if TJ dropped and that I thought he had.. he responded right away, " Well, we don't want you dropping the baby... that wouldn't be a good thing!"
he had a serious face! but was joking... I had to laugh.