She can then continue testing every day or every other day until she gets a positive test result. At Houston Fertility Center, Dr. Sonja Kristiansen and her team offer a wide range of services to assist individuals struggling with infertility.
To find out how we can help you on your path to parenthood, send us a message online or call us at She is a board-certified Reproductive Endocrinologist Infertility REI specialist who is proud to help hopeful parents fulfill their dreams of having children. Our center is affiliated with the:. We provide convenient care for patients from greater Houston and visitors from out of town.
For more information about our services, contact our office online or call today. Some images are of models, not actual patients. Sitemap Privacy Policy Login. More Contact Info. Menu Menu Location Contact. How Do Ovulation Tests Work?
How Long Am I Fertile? How Often Should I Test? You can track your fertile window using ovulation prediction methods such as cervical mucus monitoring, basal body temperature tracking, and ovulation tests. Your fertile window includes the few days leading up to and the day of ovulation, when conception is most likely to occur. This is because luteinizing hormone surges about 36 hours before ovulation and triggers the ovary to release a mature egg.
If you get a positive ovulation test , you can assume you will ovulate in about 36 hours and can plan intercourse accordingly. The short answer: not long. By now, you may be wondering why the fertile window lasts for a few days when an egg only lives for about 24 hours.
This is because sperm can actually survive inside the cervix for up to 5 days , if fertile cervical mucus is present. Timed intercourse i. But it is one of the most surefire ways to give yourself the best possible chance at conception!
Once you get that peak fertility observation like a positive LH test, you should start having sex. If you and your significant other have been trying to conceive for some time now, sex might feel less like fun and more like a chore.
There is only a slightly higher chance of conceiving when having sex every day during your fertile window, versus having it every other day. Once you get a positive ovulation test and have intercourse during your fertile window, you may be wondering what to do next. So what can you do during this infamous two week wait?
Let's break this down to explain the LH surge in greater detail. The LH peak varies significantly, ranging from around hours before ovulation, per authors writing for the American College of Obstetricians and Gynecologists.
As the authors noted, however, a "significant proportion of women" have already missed the best window for conceiving by the time their LH test detects the LH surge. What's more, an LH surge may last fewer than 10 hours, so you may miss the surge entirely if you're testing for it only once a day.
There's also a problem with false positives with OPKs for women over the age of 40 and with certain conditions. Women over 40 typically maintain a high level of LH throughout a cycle, increasing the risk of a false positive. Certain conditions, including polycystic ovary syndrome PCOS , may also produce a false uptick of LH before the actual surge.
Be sure to follow the instructions on when to test carefully. When you start to test depends on your cycle length. For example, if you have a short cycle, you may even need to start testing before your period is even finished.
Ovulation trackers typically rely on algorithmic guesses about the average woman's cycle. But studies show most women don't ovulate on day 14 of their cycle, and age as well as ethnicity may also impact whether you ovulate earlier or later than the average.
The trick is to be intimately in tune with your body by keeping tabs on multiple fertility cues, rather than relying on a kit or an app alone. By tracking your LH, CM, and basal body temperature — or even better, continuous core body temperature — you could boost your chances of identifying the fertile window before ovulation. And one final pro tip: When you get an LH peak, have sex in the next 12 hours if possible, and the next day too.
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