There are actually quite a lot of reasons why your car insurance rates may rise. But your agent may have neglected to inform you of these reasons when you first signed up, or you may have forgotten them over the years.
Your body gets rid of the mucus plug typically between 37 and 42 weeks of gestation. It can even happen as late as right before delivery! Some women though can lose it earlier in the pregnancy, and again, the body will create more mucus to protect your baby.
On the other hand, some women do not see their mucus plug until well into labour. According to a member poll in the BellyBelly forums, 34% of women reported that they lost their show around 2 days prior to labour starting. A further 30% lost the show during labour and 17.65% who never saw their show at all.