What are the causes of implantation spotting

Implantation spotting is a light pinkish discharge that may occur ranging from the time of fertilization up to 10 days afterward. This implantation bleeding is thought to be due to the implantation of the embryo into the endometrium (lining of the uterus).

Here are some of the causes of implantation spotting

Due to embryo

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Implantation bleeding occurs when the embryo begins to “take root” in the lining of the uterus. The blood vessels surrounding the fertilized egg cause implantation bleeding, which occurs around six days after ovulation and can last for a few hours up to a couple of days.

Hormonal changes

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Hormonal changes during pregnancy also cause vaginal discharge. Estrogen increases throughout pregnancy, often causing an increase in discharge as well.

Trauma or injury

Trauma or injury that causes bleeding into the vagina or cervix can mimic implantation spotting . It is important not to mistake these episodes as implantation bleeding, because doing so may lead you to believe you are pregnant even if you’re not!

Intercourse without using any form of contraceptive.

Implantation can occur during intercourse without the use of contraception. Human Chorionic Gonadotropin ( hCG ), which is a hormone produced by cells that form the placenta, increases rapidly after implantation occurs.

Changes in your vaginal lubrication

Changes in your vaginal lubrication often are due to hormonal changes or other factors unrelated to being pregnant. However, if you experience this discharge at time other than implantation , it may be wise to consult with your health care provider before falsely assuming pregnancy .

Pregnancy symptoms

Pregnancy symptoms such as nausea, vomiting, frequent urination or fatigue also could mimic implantation bleeding. Again, the key here is that your symptoms should not occur at times other than implantation for them to be considered part of normal early pregnancy symptoms.

The embryo reabsorbed by your body

The embryo may not implant itself into the uterine wall and instead can be reabsorbed by your body. If this occurs, you won’t experience any symptoms whatsoever. This happens in about 7 out of 100 conceptions .

A miscarriage

A miscarriage could mimic implantation bleeding as well because it involves a loss of tissue from within the uterus. Early miscarriages and threatened miscarriages often produce light vaginal bleeding, which may lead to false conclusions regarding whether or not you actually are experiencing implantation spotting.

Six days after ovulation

Implantation typically occurs around six days after ovulation , so if you have irregular cycles, it might take your body some time to catch up with where you actually are in your cycle as far as the day of ovulation and implantation. In other words, implantation could be happening much later than you think in your cycle.


It is important to consult your health care provider if you are trying to conceive and experience vaginal spotting or bleeding. A pregnancy test will be able to rule out implantation or miscarriage. If implantation has occurred, your hCG levels will increase rapidly. This may come as a surprise because you probably won’t have experienced any symptoms of pregnancy, but this is why early detection with pregnancy tests can be so helpful.

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