1. Your cycle may change from month to month.
The length of a normal menstrual cycle varies from 28 to about 36 days.
These variations are based on a number of factors, including your natural
body rhythms, stress levels, and weight gain or loss. Ironically, the
stress of trying to conceive may throw your cycles off kilter. Monitoring
your cycle through ovulation predictor kits (OPKs), charting basal body
temperature (BBT), and/or examining cervical mucus can greatly increase
your odds of becoming pregnant during a particular cycle.
2. All cycles are not created equal.
Even if you menstruate every 28 days without fail (and few women do),
there's no guarantee that you'll ovulate exactly midway through your cycle.
In fact, women with 28-day cycles may ovulate anywhere from day 12 to day
16 — or, occasionally, not at all.
3. You're only fertile for 24 hours.
Once you ovulate, there's a small window of opportunity — roughly 24
hours — before the egg degenerates and is reabsorbed into your body.
Fertilization must occur within this period. Yet sperm, which live for
three to four days, can take eight hours or more to swim up the cervix and
rendezvous with the waiting egg (like men, they're not always punctual!).
Monitoring your cycle helps you predict when you're going to ovulate at
least 24 to 36 hours in advance, giving you more time to get the sperm
started on their journey.
4. You may have a short luteal phase.
The second half of your menstrual cycle — between the day you ovulate
and your next period — is called the luteal phase. Although the normal
length of this phase is 12 to 16 days, for some women it is much shorter. A
fertilized egg needs 10 days to reach the uterus and implant. If your
luteal phase is shorter than this, you will need drug therapy to increase
it before you can successfully get pregnant.
5. Cervical mucus may help — or hinder.
Cervical mucus (the vaginal discharge that accompanies ovulation) varies in
consistency and appearance, from thick and cloudy to clear and elastic. In
order to provide a fertile environment for the sperm, mucus should have the
consistency of egg whites: clear, slippery, and slightly stretchy. It's
important to monitor your cervical mucus around the time you ovulate and
plan intercourse accordingly. Otherwise, even if you ovulate right on
schedule, the sperm might be unable to reach the egg in time.
Sources: American College of Obstetricians and Gynecologists,
www.acog.org; American Society of Reproductive Medicine, www.asrm.org
The information on this Web site is designed for educational purposes only. It is not intended to be a substitute for informed medical advice or care. You should not use this information to diagnose or treat any health problems or illnesses without consulting your pediatrician or family doctor. Please consult a doctor with any questions or concerns you might have regarding your or your child's condition.
Content courtesy of American Baby.
