To clarify, the baby is in a sack inside of your uterus. The Dr probes into the cervix about a fingers length and separates the membrane from the lower portion of the uterus and cervix. It does not break the water (but could if Dr isnt careful) but it can cause contractions and get the body moving towards labor.
<blockquote><b>Quoting Jillbill4:</b>" for me it was a way to get me excited then have nothing happen, more than once lol"</blockquote>
I did my own membrane sweep with my first cause my Dr sucked and I ended up breaking my water. So DIYs definitely can do the trick. Since that doc, I've had the best OB ever and I have always gone within a few days from the sweep- by 38 weeks! Seriously never gone a day past 38 in any of my pregnancies.