This protective liquid, consisting mostly of water, fills in the sac surrounding the fetus. Amniotic fluid is a colorless liquid that
surrounds and protects the baby inside the amniotic sac within the uterus. When the amniotic sac ruptures, this may be referred to as your "water breaking."
When your water breaks, you may be unsure that this is what has happened. It isn't just one gush with no further leakage. While there often is a
warm gush, it is usually followed by a slow, steady leak of small amounts of amniotic fluid. Having continuous leakage is a good sign that your water has broken. The fluid
is usually clear, though it can be bloody, or yellow- or green-tinged. If you are unsure if your water has actually broken, smell it - it should smell sweet.
Your healthcare provider may have a test done to be sure, such as the nitrazine test, which is when amniotic fluid is placed on a strip of paper and the paper color changes
to reflect the pH of the fluid, or you may have the ferning test, where a sample of the fluid is taken from the back of the vagina with a swab and examined under a
microscope. Dried amniotic fluid creates a fern pattern, visible under a microscope.