Can implantation bleeding happen 2 days before period

When a fertilized egg attaches to the wall of the uterus, where it can begin growing, some light brown/pink spotting may occur. This is called implantation bleeding, and it can be one of the earliest signs of pregnancy. Some women don’t experience this type of bleeding, and some simply don’t notice it. If it happens, it doesn’t indicate a problem with your pregnancy.

Is It Implantation Bleeding or My Period?

It’s possible to mistake implantation bleeding for a very light and early period at first. However, there are some differences to pay attention to. Although every woman’s period is different, it’s still possible to guess that it's implantation bleeding by the color and amount of bleeding, and by where you are in your menstrual cycle, as well as by looking out for other early signs of pregnancy — more frequent bathroom trips, fatigue, and nausea (i.e. morning sickness).

These are the main signs and symptoms of implantation bleeding compared to a period:

The amount of blood.

  • Implantation bleeding isn’t heavy; it’s more like a discharge or light spotting that’s about a few drops of blood on your underwear.

The brown discharge.

  • The blood from implantation is more of a pinkish or brown color, rather than a bright red some women normally see during a period. The spotting can be between the period.

When Does Implantation Bleeding Happen?

You may notice implantation bleeding around 10 to 14 days after conception, when a fertilized egg becomes attached to the lining of your uterus. Keep in mind that conception may not occur on the same day you had sex. Sperm can live as long as five days inside a woman’s reproductive tract, and conception might not occur for several days after sex.

Should I Take a Pregnancy Test During Implantation Bleeding?

You can take a home pregnancy test during implantation bleeding. Keep in mind that the pregnancy hormone human chorionic gonadotropin (or hCG) that pregnancy tests detect only starts being produced in your body the moment the fertilized egg is implanted in the uterus — which is the trigger for implantation bleeding. The earlier you take the test, the less hCG there is to detect, meaning that the test may not yet be accurate. If you have the patience to wait, you’ll get a more accurate test result if you wait until after the first day of your missed period.

Can implantation bleeding happen 2 days before period

If you get a positive test result, schedule an appointment with your healthcare provider to confirm your pregnancy. And you can get an estimate of when to expect your baby by using our handy tool to calculate your due date.

Should I See a Doctor?

Implantation bleeding is generally nothing to be concerned about, but it’s a good idea to talk to your healthcare provider about any bleeding you experience during pregnancy. Although light bleeding in early pregnancy can be totally normal, there are some reasons for bleeding in early pregnancy that need to be addressed immediately. These can include infection, miscarriage, or ectopic pregnancy.

FAQS AT A GLANCE

Yes, but home pregnancy test results are usually more accurate when taken after the first day of your missed period.

On toilet paper, you might see light traces of pinkish or brown blood.

Implantation bleeding is very light. If you notice anything, you might only see a few spots of pinkish or brown blood.

It’s thought that when a fertilized egg attaches to the uterus, implantation bleeding happens. This could be about 10 to 14 days after conception. If you have regular periods, it happens around the time you would expect your period.

Implantation bleeding may sometimes be mistaken for a light period, especially if you have light or irregular periods normally. But these drops of blood could also be a sign that you’re about to embark on a very exciting journey. If you’re at all unsure, check in with your healthcare provider.

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Answer From Mary Marnach, M.D.

Implantation bleeding is defined as a small amount of light spotting or bleeding. It typically occurs about 10 to 14 days after conception. Implantation bleeding is common, and it usually isn't a sign of a problem.

Implantation bleeding is thought to happen when the fertilized egg attaches to the lining of the uterus. Implantation bleeding usually occurs around the time you would expect to have a menstrual period. However, implantation bleeding is lighter than menstrual bleeding.

Some people don't experience implantation bleeding and others don't notice it. Sometimes, implantation bleeding is mistaken for a light period. If this happens, you might not realize that you're pregnant. This can lead to mistakes when determining a baby's due date. A fetal ultrasound — typically done during the first trimester of pregnancy — can help accurately determine the baby's due date.

Implantation bleeding is light, stops on its own and doesn't require treatment. If you're concerned about any vaginal bleeding during pregnancy, contact your health care provider.

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April 19, 2022

  1. Norwitz ER, et al. Overview of the etiology and evaluation of vaginal bleeding in pregnancy. https://www.uptodate.com/contents/search. Accessed March 23, 2022.
  2. Moore KL, et al. Answers to clinically oriented questions. In: Before We Are Born: Essentials of Embryology and Birth Defects. 10th ed. Elsevier; 2020. https://www.clinicalkey.com. Accessed March 23, 2022.
  3. FAQs: Bleeding during pregnancy. American College of Obstetricians and Gynecologists. https://www.acog.org/womens-health/faqs/bleeding-during-pregnancy. Accessed March 23, 2022.
  4. American College of Obstetricians and Gynecologists. Months 1 and 2. In: Your Pregnancy and Childbirth: Month to Month. Kindle edition. 7th ed. American College of Obstetricians and Gynecologists; 2021. Accessed March 23, 2022.

See more Expert Answers

See also

  1. 1st trimester pregnancy
  2. Can birth control pills cause birth defects?
  3. Ovulation
  4. Fetal development: The 1st trimester
  5. Nausea during pregnancy
  6. Pregnancy due date calculator
  7. Prenatal care: 1st trimester
  8. Pregnancy exercises
  9. Pregnancy stretches

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Can you implant bleed 2 days before period?

Implantation bleeding is generally light and short, just a few days' worth. It usually occurs 10-14 days after conception, or around the time of your missed period. However, vaginal bleeding has been reported anytime in the first eight weeks of pregnancy. Spotting is also common before the start of a menstrual period.

How many days before your period will you get implantation bleeding?

Implantation bleeding tends to occur during the week before you would expect your period, or about six to 12 days after conception. This is around the same time a fertilized egg would be attaching itself to the uterine lining.

Can you spot 2 days before period and be pregnant?

Implantation spotting may occur when a fertilized egg attaches to the inner uterine lining. About 15 to 25 percent of pregnant people experience bleeding in early pregnancy. If implantation spotting does occur, it will often happen a few days before your next period begins.

Why am I spotting 2 days before my period is due?

Spotting before a period does not always have an obvious cause. However, it can sometimes be an early sign of pregnancy. Spotting may also occur due to hormonal fluctuations, starting a birth control pill, or perimenopause.