What is an Implantation Dip?

What is an Implantation Dip?

What is an implantation dip? The answer is, an implantation dip refers to fertility charting. Learn about the basics and understand what it means for your pregnancy.

Fertility charting

If you aren't charting yet and you're trying to conceive, I highly recommend that you get started. It is my number-one tip when you're trying to conceive.

Implantation dip chart

The implantation dip refers to your temperature dipping in the second half of your cycle. The implantation dip in your chart is seen pretty much as the holy grail of trying to conceive when you are charting, because it reflects that implantation is happening or has happened.

basal body temperature chart with implantation-dip

Does the implantation dip happen before or after implantation

The reason for this is most likely because about halfway your luteal phase, progesterone is going to go down as the corpus luteum, which is kind of the sac that the egg was in in your ovaries starts to shrivel down, and that is when progesterone starts to be produced less, and that is what causes your temperature to go down.

However, if implantation has happened, your body starts to produce hCG. And this is what we test with a pregnancy test. hCG is what tells the ovaries "don't get rid of that corpus luteum yet, just keep it intact. Please keep producing progesterone until the placenta can take over after the first 12 weeks of pregnancy". 

Then what happens is your temperature goes back up. So when you have this dip, that could be an indication of implantation.

Another reason that this dip might happen is because halfway your luteal phase, progesterone doesn't just go down, but estrogen actually starts to peak. Under the influence of estrogen, you can also have a dip in temperature. It sometimes happens with women even before ovulation. They have this little beauty mark of a pre-ovulation dip.

So this is why sometimes on a non-pregnancy chart, you can also see this dip happening. However, when you are pregnant, your estrogen levels are likely to be higher, so this dip is likely to be more exaggerated.

Now, definitely don't worry if you don't have that implantation dip. I didn't have it with my children. Guess what, 70% of women don't get this at all. So don't hold onto this implantation thing too much.

implantation dip chart

When does implantation dip occur?

If you do get it, it will happen anywhere between 6 to 12 days after ovulation. And it's actually most likely to happen around 8 to 10 days past ovulation. Now, if you want to learn more about implantation and how you can recognize it and how you can support implantation in your two-week wait or even before you have conceived, make sure to check out our dedicated section.