While implantation bleeding does not require medical care, it is important to alert your healthcare provider whenever you experience bleeding while pregnant.
This article discusses implantation bleeding and how it compares to menstrual bleeding.
What Is Implantation Bleeding?
Implantation bleeding is light vaginal bleeding or spotting when a fertilized egg implants into the lining of the uterus (endometrium). It is a very early sign of pregnancy.
Each month an egg is released from the ovary and travels through the fallopian tube. When the egg becomes fertilized by sperm, it starts to divide into multiple cells. These cells travel to the uterus and implant in the endometrium. The endometrium has many blood vessels, so it is possible for bleeding to occur as the egg attaches to the lining.
Implantation Bleeding Signs and Appearance
Implantation bleeding appears as light vaginal bleeding or spotting. You may notice a blood-tinged discharge or a pink color when you wipe after using the bathroom. Implantation bleeding is much lighter than menstrual bleeding.
Other signs of early pregnancy that may occur with implantation bleeding include:
Cramping Headache Fatigue Nausea Breast tenderness Mood changes
Timing and Length
Implantation bleeding may last for a few hours or a couple of days. It often comes and goes, and the bleeding is very light.
It happens at a certain point during the menstrual cycle. This bleeding usually occurs between days 20 and 24 if you have a 28-day cycle. It is also possible to become pregnant and not experience any bleeding.
Period bleeding starts on the first day of your cycle. If you notice that you are having light bleeding or spotting earlier than your period usually occurs, it could be implantation bleeding.
How to Tell the Difference Between Implantation and Period Bleeding
Implantation and period bleeding may appear similar, but some key differences exist. First, implantation bleeding is light. It is often only noticeable when you wipe after using the bathroom. The color of implantation bleeding is usually light pink or rust.
Menstrual bleeding is heavier than implantation bleeding. The bleeding is usually bright or dark red and can be thick in consistency.
Both early pregnancy and premenstrual syndrome (PMS) can cause symptoms such as bloating, headaches, and mood changes.
How Much Blood Is Normal for Implantation Bleeding?
Implantation bleeding is very light. It may appear as spotting or rust-colored discharge, which you may notice after using the bathroom. It is likely your period if you experience heavier bleeding. If you are unsure of the cause of your bleeding, see your healthcare provider.
Other Causes of Bleeding During Pregnancy
Bleeding may occur in early or late in pregnancy. It may be harmless, or it could signal a serious problem. Bleeding in the first trimester happens in about 15 to 25 out of every 100 pregnancies.
In early pregnancy, an increase in blood vessels occurs in the cervix. This can raise the likelihood of light bleeding or spotting after sex or a pelvic exam. Possible causes of vaginal bleeding during early pregnancy may include:
Infection Early pregnancy loss Ectopic pregnancy
Possible causes of vaginal bleeding in later pregnancy may include:
Inflammation of the cervix Problem with the placenta Preterm labor
When to Seek Medical Care
Implantation bleeding is not serious and does not require medical care. However, it is important to alert your healthcare provider any time you experience bleeding when you are pregnant. Your provider will help you determine if your bleeding is concerning and requires medical care.
Summary
Implantation bleeding is light vaginal bleeding or spotting when a fertilized egg implants into the uterine lining. It often appears as a pink or rust-colored discharge. Implantation bleeding occurs around days 20 to 24 in a 28-day cycle.
Menstrual bleeding during your period is usually heavier and happens on the first day of your cycle. Period bleeding usually appears bright or dark red. To know if you are pregnant, take a pregnancy test about one week after your missed period.
