I assume that they checked the pH of the fluid to make sure it was actually amniotic fluid (it isn't always!) and are keeping an eye on you, so the medical advice is their field. What I can tell you is that sometimes the amniotic sac does get a small tear in it which leaks the fluid - it often repairs itself and is no longer a problem.
Avoiding vaginal exams is a good idea while the sac is not sealed, because that gives a direct route for bacteria to be pushed into the vaginal canal (even if their hands are gloved, if there is any bacteria around the outside of your vag, they can push it inside where it can be harmful.) The same goes for avoiding intercourse, naturally.
The leaking is not something to take lightly, but it can be okay.
If you have ANY contractions or lower back pain, or any bleeding, please get to the hospital right away - even if they checked you earlier that day and you weren't dilated or effaced at all.
at 9:12 PM on Apr. 12, 2009