Implantation bleeding is characterized by scant pink or brown blood that can occur about 10 to 14 days after ovulation. It can last a few hours or up to three days. However, not all women experience this symptom.
Implantation refers to the fixation of a fertilized egg to the wall of the uterus, which initiates pregnancy. Implantation triggers many changes in hormones to stimulate the formation of of structures that are essential for fetal development.
Implantation bleeding is considered normal and is generally one of the first signs of pregnancy. However, bleeding that is excessive, lasts for more than 3 days or is accompanied by cramps or vomiting should be urgently assessed in an emergency room, as these are signs of more serious health conditions, like a miscarriage or ectopic pregnancy.
When does it occur
Implantation bleeding emerges after ovulation as a result of unprotected sex that leads to fertilization.
This bleeding is typically scant and occurs 10 to 14 after conception.
What implantation bleeding looks like
Implantation bleeding can be identified through symptoms such as:
- Light bleeding with color varying from brown to pink, it can also look like coffee grounds
- Stains or dots of blood in underwear
- Mild abdominal cramps
Implantation bleeding may be accompanied by other pregnancy symptoms, such as nausea, breast tenderness or headache, for example, and is considered one of the first signs of pregnancy. Read more about pregnancy symptoms and how they may present.
Implantation bleeding vs. period - what's the difference?
Menstruation, or a period, is characterized by heavier bleeding and bright red blood (in the first days of your cycle) that lasts for about 5 days. In some women, a period can also be accompanied by clots. Implantation bleeding, on the other hand, is not heavy, lasts for just a few hours, and is different in color (usually light pink to dark maroon like coffee grounds).
How long it lasts
When implantation bleeding occurs, it can last from hours to up to 3 days. Blood flow is not heavy, nor does it increase. Bloating and tingling in the belly can also last for up to 3 days. If these symptoms are very intense, if they last for more than 3 days, or if bleeding is bright red, heavy and not period-related. you should see your doctor or gynecologist for assessment. They will examine you to determine a diagnosis and indicate treatment as necessary.
If symptoms disappear in 3 days, there is a good possibility that you could be pregnant. Therefore, it is important to consult your doctor or gynecologist so that you can do a blood test to assess your beta-HCG levels. This hormone will be positive in the blood in the presence of pregnancy.
If you have any of the symptoms of implantation bleeding, complete our test below to assess your probability of pregnancy:
When to go to the doctor
It is important to see your doctor or gynecologist, or to proceed to an emergency room if you experience any of the following:
- Heavy or bright red vaginal bleeding
- Bleeding that lasts more than 3 days
- Severe abdominal pain, similar to intense menstrual cramps, which can radiate to the back
- Severe cramping on just one side of the belly
- Foul-smelling vaginal discharge;
- Fever or chills
These symptoms should be evaluated by a doctor, who may order further testing to confirm a diagnosis.
