
Cervical fluid is a mixture of substances produced by glands in your cervix which acts as a protective barrier to your uterus. Tracking cervical fluid is especially helpful if you are trying to become pregnant. Your predicted day of ovulation will look like this in the Clue app:īy Science Writers at Clue Why should I track cervical fluid to become pregnant? If the egg is not fertilized within this time, it passes out of your uterus with your period. So, if you have unprotected sex or use another form of insemination up to five days before ovulation, the sperm can live long enough to potentially fertilize the egg and pregnancy may result.

Sperm can live inside the body for up to five days before ovulation, depending on the health of the sperm and the quality of the cervical fluid. The egg can be fertilized for up to 24 hours as it journeys through the fallopian tubes towards the uterus. Ovulation occurs when one of your ovaries releases an egg. Sex too early in the cycle or too late in the cycle won’t lead to pregnancy because there won’t be an egg to fertilize (5, 6). To conceive, you need to have unprotected sex during the days that you are assume you are fertile. Your biological fertile window consists of the days leading up to, including, and immediately after ovulation.

This will tell you your typical cycle length (the number of days between the first day of your period and the day before your next period starts), your typical period length (the number of days of bleeding each cycle), and the typical cycle length variation (a measure of your cycle’s changes from one cycle to the next). If you currently use Clue Plus, you’ll be able to see an enhanced version of the Analysis screen. In contrast, unpredictable cycles may be a sign of an issue that can make becoming pregnant more difficult, such as polycystic ovary syndrome (PCOS), or just make it harder to predict when you might be ovulating (2). If you have predictable cycles, it’s likely that you’re also ovulating around the same time each cycle. Why does cycle predictability matter when you’re trying to conceive?Ĭycle predictability is associated with the predictability of ovulation. Once you’ve learned if you have “regular” cycles, then you can start paying attention to your body's fertility window and predicted ovulation day. While most people don’t have perfectly predictable cycles, a “normal” cycle length variation is between 0-7 days for people between the ages of 26 and 41, and 0-9 days for people between the ages of 18-25 or 42-45 (1). If you’ve been using the Clue app and have tracked at least three cycles, you'll be able to establish a baseline for your period predictability and cycle length. Clue calculates your estimated ovulation day using this data. You can use Clue to track your cycle predictability, cycle length, basal body temperature (BBT), cervical fluid, and ovulation test results. If you’re having trouble getting pregnant, then tracking these things may help you figure out what might be going on. Once you have this information, you can have sex at the optimal time for conception. If you are trying to get pregnant, knowing more about your menstrual cycle and fertility indicators can help speed up the process. This article is also available in: português, español
