When your water breaks
before labour
What is PROM?
PROM means that your water breaks before labour begins. Labour is when you have regular
contractions, or labour pains, in your uterus.
Even though the reasons for PROM are not well understood, it can occur with a healthy pregnancy.
About one in 10 people with healthy pregnancies experience PROM.
If PROM happens before you are 37 weeks pregnant, it is called preterm prelabour
rupture of membranes, or PPROM. The information provided in this document only
applies to PROM at or after 37 weeks. Contact your midwife if you think you might be
experiencing PROM and you are less than 37 weeks pregnant.
How will I know
if my water
has broken?
Many pregnant people wonder
how they will know when their
water breaks. For example,
sometimes it can be hard to tell
the difference between amniotic
uid, pee and regular discharge
from your vagina.
FEELING APPEARANCE SMELL
You may:
Hear or feel a pop inside
your uterus or vagina.
Have wet underwear.
Feel a big gush of uid
that you can’t stop.
Feel a slow, steady trickle
of uid from your vagina.
Amniotic uid is usually clear or
straw coloured. It may also:
Look green or yellow (this
happens when the baby has its
rst bowel movement, called
meconium, in the water).
Contain streaks of blood and
mucous.
Have little white bits in it (this is
vernix, a creamy white substance
that covers and protects the
baby’s skin).
Some people think amniotic uid
smells sweet or like bleach, or
that it has no smell at all.
Amniotic uid does not smell like
urine and should not smell bad.
This could be a sign of infection.
What is the bag of water,
or amniotic sac?
Your baby grows inside the amniotic sac.
This is a membrane lled with a liquid
called amniotic uid.
It acts like a cushion, protecting your baby
from the outside world.
It allows your baby to move
around freely.
PRELABOUR RUPTURE OF MEMBRANES (PROM)
The AOM is committed, through our statement on Gender Inclusivity and Human Rights, to reect and include trans, genderqueer and intersex
communities in all aspects of our work. In this document, the term “vagina” refers to the birth canal. This is to increase understanding of
important concepts related to PROM across all English literacy levels.
© 2020 Association of Ontario Midwives
Some signs that your water may have broken include:
Call your
midwife
right away...
What should I do if I think my water has broken?
Your midwife will talk to you about when and how to contact them if you think your water has broken. They will
explain when you may need to contact them right away, and when it may be okay to wait until morning to contact
them if your water breaks in the middle of the night.
*You can check your baby’s
movements anytime.
1. Lie or sit down.
2. Count all movements (kicks,
utters, rolls).
3. You should feel at least six
movements in two hours or
less.
4. If you do not feel six
movements in two hours, call
your midwife.
...if your water breaks and:
You are less than 37 weeks
pregnant, or
Your midwife has told you that
your baby’s head is high, or
You have a fever (38°C or
higher), or
The amniotic uid is green or
yellow, or
The uid has a strong smell or
smells bad, or
You have heavy bleeding, or
Your baby is moving less than
usual*.
Ask your midwife what to do and when to contact them if your
water has broken. Write down those specic instructions here:
Helpful tips if you think your water has broken:
Remember that PROM is common and, in most cases, is NOT an emergency.
To help lower the small chance of infection:
» Do not put anything into your vagina (no ngers or tampons, no sex).
» Do not take baths until active labour (showers are okay).
Active labour means your contractions are:
REGULAR AND STRONG LESS THAN FIVE MINUTES APART CHANGING YOUR CERVIX
Put on a pad. If your water is broken, it will keep leaking. You will need to wear a pad to keep you dry.
Take note of:
» The time your water broke, or when you think it broke if you aren’t sure.
» How much water is leaking.
» The colour of the uid.
Eat and drink normally.
Get some rest. You can continue with your usual activities, but remember that resting is important to
help you get ready for labour. It’s a good idea to lie down and take naps.
What about infection?
If you have PROM, the risk of infection for you and your baby is very low.
There are three types of infection that can happen with PROM:
Chorioamnionitis: an infection in the uterus
Endometritis: an infection in the uterus after the baby is born
Newborn infection: an infection in the baby’s bloodstream
The chance of getting an infection due to PROM:
Is lowest in the rst 24 hours after your water breaks (75% of people will have their baby in this time even
without a medical induction). Even if your baby is born after 24 hours of PROM, the chance that you or your
baby will develop an infection is still very low.
Increases slightly the longer your water is broken before you give birth.
Is similar whether you wait for labour to start on its own or choose a medical induction if you have no internal
exams until you are in active labour. An internal exam is when a health care provider puts their ngers in your
vagina to check on how your cervix is opening. Internal exams can increase the chance of infection by putting
bacteria into the vagina.
0
20
40
60
80
100
75%
deliver
within
24
HOURS
90%
deliver
within
48
HOURS
95%
deliver
within
72
HOURS
What happens after we know
my water has broken?
Once your water has broken, you will likely go into labour
on your own within the next few hours or days. Many people
experience an initial quiet period without contractions.
Most people (75%) have their baby within 24 hours after their
water breaks.
Almost all people (95%) have their baby within 72 hours after
their water breaks.
What options do I have after my water has broken?
Your midwife will discuss two options with you:
MEDICAL INDUCTION
(taking a drug that gets
your labour started)
WAITING FOR LABOUR TO START ON ITS OWN
(this may include natural methods
of starting your labour)
Although both of these are generally safe options, sometimes there are reasons your midwife may recommend a
medical induction, such as:
You have signs of infection. There is a small chance that you or your baby could develop an infection
following PROM. Some signs of infection include:
» Fever
» Your baby’s heart rate is high
» Your amniotic uid smells bad
Your baby passed meconium (its rst bowel movement) into the amniotic uid.
You are group B streptococcus (GBS) positive.
Medical induction of labour Waiting for labour
What is it?
Your labour is started with a drug: misoprostol
and/or oxytocin.
Waiting for labour to begin on its own.
This may include non-medical ways of starting
labour:
» Castor oil.
» Nipple stimulation, often with a breast
pump.
» Acupuncture.
How long will it take for labour to start?
Most people will go into labour within 24 hours
from when the medical induction starts. Most
people will give birth within six to 28 hours of
going into labour.
Most people will go into labour within 24 hours
of their water breaking.
Where will it take place?
Medical inductions must take place in the
hospital.
Waiting for labour to start on its own usually
happens at home.
What can I expect?
Some people need a drug called misoprostol to
help get their cervix ready for labour. Misoprostol
is a pill that you swallow.
When your cervix is ready for labour, you will be
given a drug called oxytocin through an IV drip.
Oxytocin and misoprostol lead to strong
contractions that may be stressful for babies.
Their heart rate needs to be watched carefully.
This is done with a machine called an electronic
fetal monitor (EFM).
It can be hard to move around with EFM because
you are attached to a machine. This may make
labour feel more painful. Some hospitals have
wireless EFM, called telemetry, which allows you
to move around more. You can ask if telemetry
EFM is available at your hospital.
Hospital staff may or may not be part of your
care during the induction. Some hospitals have
policies that mean midwives need to transfer your
care to a doctor for induction. If this happens,
your midwife will continue to provide supportive
care, comfort and information. Care will be
transferred back to your midwife after the birth.
You will be able to rest at home while you wait.
Your midwife can discuss with you natural ways
to start labour.
Your midwife will check in with you regularly to
make sure that you and your baby are healthy.
Medical induction of labour Waiting for labour
For every 100 birthing parents
who were INDUCED
For every 100 birthing parents
who WAITED FOR LABOUR TO START
For every 100 pregnancies
that were INDUCED
For every 100 pregnancies
that WAITED FOR LABOUR TO START
What about pain management?
You may be more likely to ask for an epidural
during a medical induction of labour. An
epidural is a form of pain relief that involves
using a needle to put a small tube into the
space around your spinal cord. Pain medication
is given through the tube to block pain in the
lower half of your body.
You may be less likely to ask for an epidural if
you wait for labour to start on its own.
What happens after I decide?
If you have decided to have a medical induction
of labour:
Your midwife will let you know when to go to
the hospital to get things started.
If you have decided to wait for labour to start
on its own:
Your midwife will let you know when you should
contact them, for instance:
If you go into active labour.
If you develop signs of infection.
If you would like a change in plan.
If you have questions or concerns.
*Infection rates are based on cases where no internal exams were done before active labour started.
Note that the difference in infection rates between medical induction of labour and waiting for labour to
start on its own are “not statistically signicant.” This means that the differences could be due to chance.
10%
12%
10 developed an infection 12 developed an infection
1.7%
2.5%
1.7 newborns developed an infection 2.5 newborns developed an infection
Remember:
Even though there is a small increase in the chance of infection the longer your water is broken, it is most
likely that you and your baby will NOT get an infection at all. Most people who choose to wait for labour
to start on its own will have their baby within 24 hours of PROM, when the chances of infection are lowest.
If you choose a medical induction of labour, it may involve more birth interventions (drugs, IV, EFM,
epidural) than if you waited for labour to start on its own.
The best ways to lower the chance of infection after PROM are to avoid putting anything in your vagina
and to avoid internal exams until you are in active labour.
Talk to your midwife if you are interested in non-medical ways to start labour, such as castor oil, nipple
stimulation (often through a breast pump), acupuncture and other methods. No matter what you choose, your
midwife will support you in your decision.
How can I decide what’s best for me?
There are many things to think about when you decide whether to have a medical induction or wait for labour to
start on its own.
For example, you may want to think about these questions:
How do you feel about the chances of infection?
Where do you want to labour? Where do you want to have your baby?
How comfortable are you with having birth interventions?
» How do you feel about pain medications and an epidural? Do you want them? Or do you hope to avoid
them?
» How do you feel about having an IV drip?
» How do you feel about the idea of EFM?
Do you have other questions for your midwife?
Write them down here: