How Ovulation Works
The key to getting pregnant (or preventing pregnancy) is to understand your ovulation cycle. Ovulation is when a mature egg is released from one of the ovaries, which usually takes place near the 14th day of a 28-day cycle. However, the 14th day is only an average. In reality, a woman with a 28-day cycle may ovulate one of the days between the 11th and 21st cycle day (the first day of your period is cycle day 1). We call these 10 days your “fertility window.”
As a woman, it is important that you keep track of your cycle; otherwise, it is nearly impossible to know when you are most likely to ovulate. A typical cycle is measured by the first day of your period to the first day of your next period, with the average being 28-32 days. If you are like me, this isn’t always cut in stone. Everybody is different. Discover your Fertility Window in seconds with the APA ovulation calendar.
Ovulation is a delicate hormonal process of the female reproductive system governed by five main hormones. Each hormone triggers one another, coordinating the development and release of an egg from the ovaries.
This is a simple yet complex process that creates a
monthly cycle.
Three hormones are produced in the brain, the Gonadotrophin-releasing hormone (GnRH), follicle-stimulating hormone (FSH) and luteinizing hormone (LH). While the other two hormones estrogen and progesterone, are made in the ovaries.
Pregnancy After Ovulation
Getting pregnant after ovulation is possible, but is limited to the 12-24 hours after your egg has been released. Cervical mucus helps sperm live up to 5 days in a woman’s body, and it takes around 6 hours for active sperm to reach the fallopian tubes. If the sperm is there when or shortly after an egg is released, you can quickly become pregnant in the day after ovulation.
What Affects Ovulation?
Our bodies are programmed to function like self-healing machines. However, every person has a different genetic makeup and is exposed to different environmental factors. Both genetics and outside factors may affect these reproductive hormone levels, which can impact your chance to conceive. If you believe you are facing infertility, remember that you have options and that you are not alone.
According to a survey taken in 2015 by the Reproductive Medicine Associates of New Jersey,
There has been a 65% increase in IVF since 2003.
Some environmental factors that affect ovulation:
- Stress can play a big role in ovulation irregularities. Practice stress-relieving exercises like deep breathing, gentle exercise, stretching, yoga, meditation, and positive affirmations.
- A healthy and balanced diet is another big factor. If your dietary needs are not being met, your hormones and ovulation can be affected.
- Chemicals in our environment have a large effect on how our bodies work. According to a study published in 2003 by Environmental Health Perspectives, “industrial compounds can decrease a couple’s ability to have children by up to 29%”.
Do You Need Help?
Every pregnancy is a blessing of a new life. Whether you are trying to conceive or attempting to avoid getting pregnant, knowing more about ovulation and your cycle can be extremely helpful.
No matter the situation you may be facing, you are NOT ALONE. Everyone has a different story, yet many of us have similar circumstances. Together we can help each other gain understanding and strength!
If you want to pin down the day that you ovulate, it is a good idea to purchase some ovulation predictor kits (OPKs). These are tests similar to a urine pregnancy test, but instead of testing for the pregnancy hormone (hCG), they test for other hormones that peak at the time of ovulation. If you are trying to conceive, these OPKs can be very helpful so that you know the best time to plan intercourse.
If you think you are having symptoms of pregnancy, check out our article on the signs of pregnancy.
If you are wondering when you can take a pregnancy test, the American Pregnancy Association suggests waiting until the first day of your expected period. The best time to test is in the morning, with the first morning’s urine. This is when the urine should be the most concentrated and most able to give you a correct response.
Want to Know More?
- Ovulation: Frequently Asked Questions
- Ovulation Kits and Fertility Monitors
- How to Get Pregnant
Your fertility window is the time during your menstrual cycle when you’re most likely to get pregnant. For most people, it’s the five days leading up to ovulation, the day of ovulation and the day after ovulation. Calculating your monthly fertility window can help you target the optimal time to have sex if you’re trying to conceive. However, natural family planning is a less reliable form of contraception and does not protect against sexually transmitted infections.
Understanding Your Menstrual Cycle
If you’re trying to get pregnant and want to track ovulation, you need to understand your menstrual cycle. Your menstrual cycle is your body’s way of preparing for pregnancy. It begins on the first day of your period and starts over when your next period begins. A typical menstrual cycle is 28 days, but cycles ranging from 21 to 35 days are considered normal.
Lots of changes happen in your body during the cycle, including hormone fluctuations. About halfway through, one of your ovaries releases a mature egg. The egg goes to one of your fallopian tubes, where it waits to be fertilized by sperm. The lining of your uterus gets thicker, too. This prepares the uterus for implantation of the fertilized egg.
If you don’t get pregnant, it could mean that the egg didn’t fertilize, or that the embryo (fertilized egg) didn’t implant into the uterus. In those cases, the uterine lining sheds and you get your period.
When am I ovulating?
Knowing when you’re ovulating is key to tracking your fertility window and determining the best time to get pregnant. There are a few different fertility awareness methods, also called rhythm methods. It’s best to use all three methods if you’re doing natural family planning.
Calendar method
Use the calendar method to track the length of your menstrual cycle. Each month, mark the first day of your period on a calendar or in a period-tracking app. The number of days between the first day of consecutive periods is the length of your menstrual cycle. You should do this for at least six months to get good data.
You ovulate about 12 to 14 days before the start of a new menstrual cycle. Your fertile window is the five days leading up to ovulation, plus the day of ovulation and the day after ovulation — so about seven days in total.
It’s important to note that if you have irregular periods and the length of your menstrual cycle varies from month to month, the calendar method won’t be accurate for you.
Cervical mucus method
Hormone fluctuations during your menstrual cycle change the amount and consistency of your vaginal mucus. You need to feel and look at your vaginal mucus each day and record the results on a chart. You’re likely ovulating (and most fertile) when the mucus is heavy, wet and slippery. It will have the consistency of raw egg whites.
You should chart your vaginal mucus for at least one menstrual cycle. It may be difficult at first to know what to look for, so talk to your provider if you want to try this method. He or she can explain how to chart and describe the mucus each day.
Ovulation predictor kits
Ovulation predictor kits are an at-home tool to help predict your ovulation. These tests may be helpful if you have regular periods, but still aren’t quite sure if you are seeing natural signs of ovulation (cervical mucus or a rise in basal body temperature). Ovulation predictor kits test your urine for levels of luteinizing hormone. When the ovulation predictor test becomes positive, ovulation will typically occur within 24 hours, indicating that you’re fertile and should have sex. These kits might not be reliable if you have irregular periods due to polycystic ovarian syndrome.
Basal body temperature method
Also called the temperature method, you take your temperature each morning as soon as you wake up (before you get out of bed). You use a basal body thermometer, which may go in your mouth or your rectum. A basal thermometer is more sensitive than a regular thermometer. It measures body temperature to a tenth of a degree.
A woman’s basal body temperature rises slightly during ovulation (increases by 0.5 degrees Fahrenheit). If you track your temperatures leading up to ovulation, you should see a sustained rise in your basal body temperature after ovulation.
To help you plan, write your body temperature down each day on a tracking sheet. You should track your temperature for at least three months before using this method for family planning.
However, it’s important to note that the basal body temperature method is not good at predicting your ovulation when trying to conceive. Once you identify the rise in your temperature, you’ve already ovulated. However, this method is a good tool to monitor your pattern of ovulation.
Should I have sex before, during or after ovulation?
For the best chances of pregnancy, you should have sex every day or every other day during the:
- Five days leading up to ovulation
- Day of ovulation
- Day after ovulation
There’s a lot of information (and misinformation) about methods for having sex that could increase your chances of getting pregnant. There’s no specific sex position that increases your odds of conceiving. Some lubricants may negatively affect sperm and prevent them from reaching the egg. Talk to your health care provider about which lubricants to avoid.
What if I have irregular periods?
If you have irregular periods, meaning that your periods are outside of the 21–35-day window or if your cycle intervals vary by more than seven days each month (30-day interval one month, 23 days the next month), you should speak with your Gyn/OB or a fertility specialist. This irregularity may be due to a hormone imbalance and could make it more challenging to get pregnant using natural family planning methods.
How else can I prepare for pregnancy?
In addition to tracking your ovulation to determine your fertile window, it’s important to schedule preconception counseling with your doctor. There are a variety of screenings and lifestyle modifications that can help increase your chances of a successful planned pregnancy.
If you’re under 35 and have been trying to conceive for more than a year, or if you’re over 35 and have been trying for six months, it may be time to talk to your doctor about why you can’t get pregnant.