Implantation Bleeding: When It Happens and What It Looks Like

I tried for what felt like an eternity to get pregnant with my second child. So when I noticed some light bleeding one day, I assumed yet another month had gone by without the result I was hoping for. Naturally, I was shocked when I got a positive pregnancy test a few days later. I later learned that what I thought was my period was actually implantation bleeding.

If you experience this type of spotting, you might be as confused as I was and think you’re having an unusually light (or short) period. But light, brief bleeding that lasts just a day or two can actually be a sign of early pregnancy. That implantation bleeding can be a tipoff that an egg has successfully nestled into your womb.

Want to learn how to recognize implantation bleeding, when it occurs, what it looks like and how you can tell the difference between this kind of bleeding and your period? Read on to get the full lowdown on implantation bleeding and what it may (or may not) mean, straight from experts.

Key Takeaways

• Implantation bleeding is light bleeding or spotting that happens when a fertilized egg has nestled in your womb.
• Implantation bleeding typically occurs 6 to 12 days after conception, often right around the time you expect your period. It lasts anywhere from one to four days.
• How to recognize implantation bleeding: Implantation bleeding is significantly lighter than a regular period, usually appearing as spotting or a few drops of discharge rather than a steady flow. It looks like light pink or brownish discharge and shouldn’t contain blood clots.
• Implantation bleeding symptoms: Implantation bleeding may be accompanied by early pregnancy signs like mild cramping, fatigue, nausea, breast tenderness or lower back pain—though many experience no other symptoms at all.
• Wait a few days after spotting stops (or until after a missed period) to take a home pregnancy test to prevent a false negative result.

What Is Implantation Bleeding?

Implantation bleeding is a small amount of spotting or bleeding that may happen after a newly fertilized egg burrows into the lining of your uterus. Since the uterine lining is rich with blood, some women spot a little at this point. This is totally normal and no cause for concern, but a pregnancy test and doctor’s visit may be in order to make sure implantation bleeding is truly the culprit (and not something else, like your period).

When Does Implantation Bleeding Occur?

Typically, implantation bleeding happens about 6 to 12 days after conception (most often, about 8 to 10 days). “Implantation bleeding may occur right around the time you think you may be getting your period,” explains Julie Lamppa, APRN, CNM, a certified nurse midwife at Mayo Clinic. That is why it can be confusing for those who experience it. “Some women will notice a small amount of spotting or bleeding,” she adds.

If you suspect you’re experiencing implantation bleeding, you’re likely eager to take a home pregnancy test—and stat. Not so fast, though. While there’s no harm in taking a test at this point, you’re better off waiting a few more days for the most accurate results. It’s best to take a pregnancy test on or after the first day of your missed period. “I had [implantation bleeding] the Saturday, Sunday and Monday prior to my big fat positive that Wednesday,” shares The Bump community member JustOne.

According to the Cleveland Clinic, your body starts producing human chorionic gonadotropin (hCG) about 10 days after conception, which is around the same time implantation bleeding may occur. At this early stage in a healthy pregnancy, hCG levels double every two days. Still, it takes time for the hormone to build up in your system and reach a volume that can be detected by an over-the-counter urine test. Some tests may be able to detect hCG about 10 days after conception, but waiting until after a missed period can lower the chance of a false negative. Blood tests are more sensitive to hCG and can detect the hormone 9 to 12 days after conception.

How Long Does Implantation Bleeding Last?

How long implantation bleeding lasts depends on the person—some claim it lasts for one day, while others say three or four. Implantation bleeding can seem like a period, but it doesn’t last as long. “You don’t continue to bleed like a normal period,” Lamppa says.

So, how much do you bleed during implantation? “It’s typically a small amount of spotting or bleeding,” says Laurie MacLeod, APRN, CNM, a certified nurse midwife at Center for Women’s Health and Midwifery in New Haven, Connecticut.

Implantation Bleeding Timeline

Your personal implantation bleeding timeline can vary based on your menstrual cycle. That said, if you have a typical 28-day cycle, below is roughly what you can expect.

What Are Implantation Bleeding Symptoms?

Everyone will experience symptoms of implantation bleeding differently. Some may have no additional markers besides the light bleeding, while others may start to encounter a few early signs of pregnancy, nurse midwife MacLeod says. These can include:

• Nausea
• Headache
• Lower back pain
• Light cramping
• Breast tenderness
• Fatigue

But, again, don’t worry if you don’t experience these symptoms of implantation bleeding. “You may not have any associated pregnancy symptoms at this time because it’s still so early,” nurse midwife Lamppa says.

What Does Implantation Bleeding Look Like?

Implantation bleeding can resemble a lighter version of your period—it’s not enough to warrant a pad or tampon, but you might consider wearing a pantyliner just in case. Unfortunately, this can make it tricky to differentiate between implantation bleeding vs. your period.

“It’s basically brown or red blood mixed in with discharge,” shares The Bump community member missbollinger. “Sometimes you can tell it’s a string of it; sometimes it’s totally mixed in with the discharge.”

Implantation Bleeding Vs. Period: How to Tell the Difference

There are a few ways to distinguish between implantation bleeding and your period:

• Duration: Your period will typically last longer than implantation bleeding, MacLeod says. If you bleed for a day or two, it’s more likely to be implantation bleeding. If it stretches beyond that time frame, you may have gotten your period.
• Volume: One of the most common questions asked: How heavy is implantation bleeding? It’s generally lighter than a menstrual cycle and shouldn’t fill a pad. “If you experience bleeding that’s considered to be heavy spotting or bleeding, that would be more than implantation bleeding,” Lamppa says. (But if you tend to have light periods anyway, you might not notice a huge difference.)
• Color: The color of implantation bleeding is also usually lighter than a normal period. It’s usually pink or slightly red at the start, MacLeod says, although it can be brownish as the bleeding resolves.
• Texture: The texture of implantation bleeding can vary, but it shouldn’t be overly thick. “It shouldn’t contain clots,” Lamppa says. Clots typically form with heavy bleeding, so if you’re truly experiencing implantation bleeding, you shouldn’t have them. Ultimately, if you’re still not sure about whether you’re experiencing implantation bleeding or your regular period, the best course of action is to wait a few more days and take a pregnancy test.

How Common is Implantation Bleeding?

Some women notice light spotting around the time of implantation, but it’s not something most women experience. All in all, there’s no real way to know whether spotting (or lack thereof) indicates pregnancy—only a test can tell. “Bleeding in the first trimester is common,” says Dr. Michael Cackovic, MD, a maternal fetal medicine physician at Yale New Haven Health. According to Dr. Cackovic, about 25 to 30 percent of women will experience some bleeding—including implantation bleeding—in the first trimester. If you have no implantation bleeding, that’s perfectly fine too. “Don’t worry! It has no bearing on the success of your pregnancy,” Lamppa says.

What to Do for Implantation Bleeding

“If the bleeding is truly light spotting, resolves quickly and there’s no significant pain or concerning symptom, there’s typically no specific treatment required,” says Dr. Jacqueline Marecheau, MD, chair of the Department of Obstetrics and Gynecology at Episcopal Health Services in Far Rockaway, New York.

Implantation bleeding isn’t typically heavy enough that you’d need a tampon, but you can wear a light pad if you prefer, says Dr. Christine Greves, MD, an ob-gyn at the Winnie Palmer Hospital for Women and Babies in Orlando, Florida. “For the first three days, I had to wear a pantyliner, but the remaining few days I only saw the brown when I wiped,” shares The Bump community member jayfinn.

When to Call the Doctor

If your bleeding comes with pain, especially if you have pain on one side over another, or if you have heavy bleeding, Dr. Greves suggests contacting your doctor right away.

There are a lot of things that can cause bleeding during the first few weeks and months of pregnancy. “Causes of bleeding during early pregnancy can range from irritation to the cervix and vagina as blood flow is increased to the area, to threatened miscarriage or even ectopic pregnancy,” Dr. Cackovic says.

If you experienced bleeding and you’ve gotten a positive pregnancy test, it’s important to see your doctor sooner rather than later to determine what’s going on.

“Your provider will assess how far you are into the pregnancy, the amount of bleeding you’re experiencing and if you’re feeling pain and other possible risk factors,” midwife Lamppa says. “All of this information will help your provider figure out the next best steps for your care.”

To Sum It Up

Implantation bleeding is relatively common, but it can be hard to figure out how to recognize it. If you’ve been trying to conceive and develop light bleeding around the start of your period that then stops, it could be a sign that you’re pregnant. However, it’s best to wait a few more days to test and know for sure.

How We Developed This Article

Many women monitor their bodies for symptoms of early pregnancy, including looking for signs of implantation bleeding. But biology can be tricky, making it easy to confuse implantation bleeding with the start of your period. To provide clear information on implantation bleeding, we consulted with three ob-gyns and two midwives. We also checked in with real moms to learn about their implantation bleeding experiences.

After editing, this article was vetted through fact-check and reviewed by our obstetrician medical reviewer. Learn more about how we ensure the accuracy of our content through our editorial and medical review process.

About the author: Korin Miller is a mom of four who had implantation bleeding before discovering she was pregnant with her second child. An experienced health and pregnancy writer and parent, Korin likes to add her personal experience to each article she writes. Her work has appeared in publications such as Women’s Health, Prevention, Cosmopolitan and The Washington Post.

Please note: The Bump and the materials and information it contains are not intended to, and do not constitute, medical or other health advice or diagnosis and should not be used as such. You should always consult with a qualified physician or health professional about your specific circumstances.