Implantation Dip: Know Whether It Indicates Pregnancy or Not?

Implantation Dip – Does It Indicate Pregnancy

Many couples wish to turn parents some day. When embarking on the journey to achieve pregnancy, any indication or sign that offers a glimmer of hope can be a source of immense joy for aspiring parents. Among the array of methods available, one of the most budget-friendly and convenient approaches involves meticulously tracking your basal body temperatures. This practice serves as a form of natural biofeedback, supplying valuable insights into your reproductive cycle. In the following article, we will delve into the intricacies of the BBT fertility approach, often referred to as the “implantation dip,” to assess its accuracy and authenticity in helping individuals on their path to parenthood.

What Is Implantation Dip?

Before you learn about implantation dip, it is important to understand basal body temperature or BBT. BBT is your body’s temperature at rest. However, your hormones, room temperature, illness, and even sleep can impact it. Further, to establish implantation dip, BBT or basal body temperature relation, you need to understand that hormones can bring changes in the temperature. Your BBT can increase after the ovulation has taken place and a decrease in temperature can indicate your period is on its way or has already arrived. An important thing to register here is that your period will not come just a week to ten days after ovulation, this means that you would not be expecting any dips in temperatures during this time. However, temperature dips take place during the luteal phase, which is the time between ovulation and your next period time and also during the time when implantation usually occurs. This dip lasts for only a day and the temperatures rise again the following day.

Though most people may attribute this dip to implantation, it is not certain whether or not this dip in the body temperature is because of implantation. This is because there are many factors that can affect your basal body temperature and make it fluctuate.

When Does Implantation Dip Occur?

Implantation can occur anywhere from 6 to 12 days after ovulation, but in most cases, it occurs around 8 to 10 days, as per one of the researches. In a study conducted in 1999, the implantation timings of approximately 200 women were monitored and the majority of the pregnancies were implanted from 8 to 10 days after ovulation. Where some women registered light-spotting and cramping as some of the implantation dip symptoms, the ones tracking their basal body temperatures attributed the dip in the temperature or implantation dip in pregnancy as another reliable indicator.

What Causes Implantation Temperature Dip?

Though the implantation dip chart is indicative of pregnancy in some of the cases, we cannot undermine the fact that the dip is present in the charts of non-pregnant women too. So, why does this happen? Well, we do not know for sure, but here are some of the possible causes of this phenomenon:

  • The surge in estrogen is one of the reasons for the dip. The higher amounts of estrogen are directly related to low body temperatures. This surge is notable two times during your cycles, once before the ovulation, and then again, somewhere midway through the luteal phase.
  • Also, women who are pregnant have higher levels of estrogen. That is why there is a frequent decline in their temperature charts.

woman wondering if she is pregnantWhat Happens After the Implantation Dip?

After the implantation dip, the size of the basal body temperature resumes until it reaches the stationary phase of the escalated body temperature that’s constant throughout the pregnancy. If you miss your period, you may take a pregnancy test to confirm whether the implantation has taken place.

Relation of Basal Body Temperature and Implantation Dip

Monitoring your basal body temperature can help you in getting more information about your monthly cycles (periods) and fluctuating hormones, and it may also help in knowing whether or not implantation has occurred. Implantation dip BBT is one of the many other options for monitoring fertility and also one of the cheapest ways to know what is happening with your monthly cycles. In order to have more accurate results, one should monitor the basal body temperatures and basal body temperature implantation dip for almost three months at a stretch.

Keeping a tab on the early pregnancy BBT chart for implantation dip or implantation dip chart can help you know more about your biphasic chart or the two phases. In the first phase, the temperatures show a low trend because of hormones preparing for ovulation. In the second phase, there is a slight increase in temperature, which results from the ovulation. However, sometimes the chart may indicate a 1-day implantation dip, which happens 7 to 10 days after ovulation, and implantation dip 7 to 10 days post ovulation is mostly referred to as implantation dip.

Does Implantation Temperature Dip Indicate Pregnancy?

If you are wondering whether an implantation dip below the cover line is indicative of pregnancy then we would like to share some valuable insight on it! Women who registered positive results by monitoring their BBT endorsed this as one of the definitive parameters of pregnancy but the ones who didn’t get the positive results felt otherwise. We cannot shrug away from the fact that human anatomy works in unusual ways sometimes and just acknowledging some temperature variations in the body as probable signs of pregnancy, which otherwise can occur too, cannot alone act as a viable determiner of the same.

Also, your body temperature changes or dips for many reasons and it can be difficult to establish why these fluctuations are taking place. You may notice a dip in your temperature if your period is approaching or due to other biological changes happening inside your body. This means that dip may not be a sign of implantation.

There are also not many studies or research available that support implantation dip as a positive sign of pregnancy. According to one of the analyses, it was observed that dip usually occurs around 7 or 8 days, however, in most cases, implantation took place anywhere from 8 to 10 days after ovulation. Also, as many as 11 per cent of women with the dip were not pregnant but 23 per cent were. These numbers are indicative that implantation dip cannot be the only parameter to determine your pregnancy. You may consider it as one of the probable signs of pregnancy rather than a definitive indicator.

Reliability of Implantation Dip to Confirm Pregnancy

Every woman who is trying to get pregnant would want to have some clear signs and indications about whether or not she is pregnant. However, relying on basal body temperature as sure short proof of pregnancy may not be the most reliable way! You can have a more accurate readout if you combine your readings with other kits such as an ovulation kit. Here are some ways to establish an early pregnancy:

  • If you are late with your period for more than a week.
  • If your home pregnancy test kit shows a positive result.
  • By taking a blood test (after you have missed your period).
  • If you are experiencing pregnancy symptoms such as nausea, morning sickness, bloating, headaches, breast tenderness, constipation, etc.
  • By getting an early ultrasound scan.


1. Do All Pregnancies Have Implantation Dip?

It is possible to become pregnant even without experiencing a major temperature drop. Therefore, do not worry if you don’t witness a dip in your BBT chart. You could still be pregnant. So, it is recommended to confirm this with a healthcare provider.

2. When Does HCG Begin to Rise After the Implantation Dip?

HCG levels begin to rise and may be detected in the blood about eight to ten days after fertilization or conception has taken place. Do take a medical test to confirm the result.

3. How I Can Boost the Chances of Successful Implantation?

You can boost the chances of successful implantation in the following ways:

  • Exercising
  • Avoiding potential toxins
  • Taking your prenatal vitamins
  • Eating a well-balanced diet
  • Reducing your stress levels

4. How Soon After Implantation Dip Can I Test?

Wait for two weeks after you note down the implantation dip to take the test.

When you have been trying to have a baby, the wait to find out something positive can sometimes be too frustrating and exhausting. So, does that mean that you can simply rely on anything that shows even the slightest of the positive hint, well, you can but it is not a foolproof way of knowing! The best thing to do is wait patiently for two weeks after you register such a dip or wait to take a home pregnancy test after you miss your period.


1. Nakamura. M, Yasuhara. S, Nagashima. K; Effect of menstrual cycle on thermal perception and autonomic thermoregulatory responses during mild cold exposure; BioMed Central: The Journal of Physiological Sciences;; March 2015

2. Steward. K, Raja. A; Physiology, Ovulation And Basal Body Temperature; National Library of Medicine: National Center for Biotechnology Information;

3. Implantation Bleeding; Cleveland Clinic;

4. Reed. B, Carr. B; The Normal Menstrual Cycle and the Control of Ovulation; National Library of Medicine: National Center for Biotechnology Information;

5. Stachenfeld. N, Silva. C, Keefe. D; Estrogen modifies the temperature effects of progesterone; American Physiological Society: Journal of Applied Physiology;; May 2000

6. Su. H, Wei. T, Yi. Y, et al.; Detection of ovulation, a review of currently available methods; Bioengineering and Translational Medicine;; February 2017

7. Wilcox. A, Baird. D, Weinberg. C; Time of Implantation of the Conceptus and Loss of Pregnancy; The New England Journal of Medicine;; June 1999

Also Read:

Signs of Implantation Cramps
Useful Guide on Implantation Bleeding 
How Late Implantation Affects Pregnancy

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Gauri Ratnam completed her Masters in English Literature from the University of Pune. She began her journey as a German translator soon after completing her graduation, but later moved on to pursue her passion for writing. Having written for both digital and print media in a varied range of industries, she has the ability to write relatable and well-researched content, benefical for anyone seeking advice or direction.