Defeated. Sad. Anxious. These are just a few of the many emotions you may feel after seeing yet another negative pregnancy test result.
Finding out you’re not expecting can be discouraging. There’s no need to give up on growing your family though!
Determining your fertile windows can help you to increase your odds of becoming pregnant.
Knowing how to track your menstrual cycle and being aware of when you are most fertile is important information if you’re hoping to conceive.
If you’re confused about how to do this or wondering if you’re doing it wrong, we’re here to clear up some common questions!
In order to calculate your fertility windows, it’s important to understand how your menstrual cycle and ovulation work.
The menstrual cycle is a series of hormonal and physical changes that make pregnancy possible.
When the menstrual cycle begins the egg is in a fluid sac (called the follicle) in the ovaries.
At the start of the menstrual cycle, several of these start to try to grow. For most women, only one of these will continue to grow though with the help of the hormone Estrogen.
After this follicle is mature, the Luteinizing Hormone (LH) surges. This causes the follicle to rupture and release the egg. (Another name for this is ovulation.) Once the egg is released, it moves slowly towards the uterus through the fallopian tube.
The egg can live for 24 hours. If you’re hoping to become pregnant, you’ll need it to come in contact with sperm during this time.
Meanwhile, progesterone levels are increasing to create the appropriate environment for a fertilized egg.
If the egg is not fertilized, progesterone levels will drop causing the start of your period. This is marked by vaginal bleeding.
Learn More : What your progesterone levels means after ovulation
Knowing the events involved in a menstrual cycle may leave you wondering how frequently one occurs.
It’s considered average to have a period every 28 days, but regular cycles that are longer or shorter than this (21 to 45 days) are still deemed normal.
This means that if you had a period on July 1, it would be considered average to have another period around July 28 or 29.
It would also be normal though to experience one as early as July 22 or late as August 14 depending on your typical menstrual patterns.
Why these differences in cycle length? Well, eggs differ in the amount of time they take to mature and release in each body.
Sperm can survive in the female body for up to 5 days. Additionally, an egg has 24 hours to meet a sperm after it ovulates.
As a result, it is possible to get pregnant for 5 days before you ovulate and one day after. This 6-day window in the menstrual cycle is when you are most fertile.
It’s important to keep in mind that while ovulation occurs during most menstrual cycles, it’s normal to have a few anovulation cycles each year. (During an anovulatory cycle, an egg doesn’t mature, so fertilization can’t happen.)
Anovulation cycles can be caused by:
While occasional anovulatory cycles are normal, experiencing it chronically can prevent pregnancy.
One common misconception is that women are most fertile the week before their period.
You’re actually most fertile at the time of ovulation, which typically occurs 12 to 14 days before your next period starts.
Because menstrual cycle and ovulation schedules can vary, you’ll want to track your ovulation and not just your period if you’re trying to determine when you are most fertile.
Up to 47% of cycles can vary by up to 7 days, so it can be tricky to determine when you are most fertile.
Some ways that you can determine when you are ovulating include:
If you use your fingers to gather some from the vaginal canal and stretch two fingers apart, the mucus can actually stretch up to a few inches when you are nearing ovulation.
This can be very subjective to test for though. Also, there is a chance you may not experience this ovulation sign every month.
A day after ovulation, the BBT rises, and it continues to rise until you get your period. This rise in the temperature is small (about 0.5 to one degree Fahrenheit).
While this is less subjective than changes in cervical mucus, you may miss your fertile window, since the rise occurs only after you have ovulated.
The scan will also show whether the inner lining of the uterus, called the endometrium, is thick enough for a fertilized egg to stick to.
While pelvic ultrasound exams can offer a lot of information, the procedure requires multiple visits to the doctor’s office, which can be inconvenient and costly.
Unfortunately, these tests won’t show that you have actually ovulated. You may be experiencing anovulation cycles and not know.
The only way to know if you actually ovulated is via an ultrasound exam or a progesterone test. The Inito Fertility Monitor is the only at-home testing option that tracks your estrogen, LH, and progesterone levels.
The Inito Fertility Monitor measures Estrogen and LH in urine to suggest your fertile days. (As a reminder: Estrogen levels rise 3-4 days before ovulation to help the follicle grow. Ovulation is triggered 24-36 hours after the LH surge.)
Use an ovulation predictor kit to plan sexual intercourse:
Having sexual intercourse when you are ovulating gives the best chance of conceiving. Using an ovulation predictor kit can make it easier to know the exact dates you’re ovulating. This way you won’t miss any potential days in your fertile window!
The Inito App shows “high fertility” when Estrogen levels have risen. On high fertility days, it’s recommended that you have sex on every other day days to maximize your chances of pregnancy.
The App will show “peak fertility” when your LH has surged. This means that you can expect to ovulate in the next 24-36 hours, and should plan to engage in sexual activity to increase your chances of pregnancy.
Following the LH surge, there should be a rise in Progesterone to show that you have actually ovulated. If you’re worried about whether or not ovulation happened, you can use the Inito Fertility Monitor to confirm. It will show “ovulation confirmed” once your Progesterone has risen steadily after the LH surge.
One last thing to keep in mind: If you have a cycle when you don’t ovulate, just try again the next month.
However, if you have multiple anovulatory cycles you’ll want to check in with your doctor. (For more information about anovulation, check out [link to Inito Anovulation Blog Post].)
The American College of Obstetricians and Gynecologists. (2015). Fertility awareness-based methods of family planning. acog.org/Patients/FAQs/Fertility-Awareness-Based-Methods-of-Family-Planning
Su HW, et al. (2016). Detection of ovulation: A review of currently available methods. onlinelibrary.wiley.com/doi/pdf/10.1002/btm2.10058
Periods and fertility in the menstrual cycle. https://www.nhs.uk/conditions/periods/fertility-in-the-menstrual-cycle/
Mayo Clinic. Menstrual cycle: what’s normal, what’s not. https://www.mayoclinic.org/healthy-lifestyle/womens-health/in-depth/menstrual-cycle/art-20047186