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The blood of implantation bleeding is usually light pink to rusty brown rather than the bright red colour of a period, and amounts to a few drops or light spotting.
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It typically lasts between a few hours and up to four days, compared with four to seven days for a period.
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Any cramping tends to be light and doesn't build in intensity, unlike period cramps.
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It often arrives around the time you'd expect your period, which is why it's commonly mistaken for one, but it's much lighter.
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Not experiencing implantation bleeding tells you nothing either way, as most pregnancies don't involve it.
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Contact your GP or midwife about any heavy bleeding in early pregnancy, as this can indicate miscarriage, ectopic pregnancy or infection.
Have you ever heard of implantation bleeding? It's a topic that often comes up in discussions about pregnancy, but many people aren't quite sure what it is or what it means.
In this article, we'll be exploring what implantation bleeding is, when it typically occurs, and what you can expect if you experience it. Whether you're trying to conceive or simply curious about the ins and outs of pregnancy, this post is for you.
What is implantation bleeding?
Implantation bleeding happens when a fertilised egg (embryo) attaches to the lining of the uterus.
It's often characterised by light spotting and is caused by the blood vessels in your uterus bleeding when the embryo implants.
What does implantation bleeding look like?
Implantation bleeding typically involves a small amount of spotting that can range from light pink to a rusty colour. This light bleeding can last between a few hours to up to four days and is sometimes accompanied by other implantation symptoms.
You may notice light traces of blood in your knickers, on a sanitary pad or the paper when you wipe after going to the loo.
How much blood does implantation bleeding produce?
Implantation bleeding is usually light and only results in a few drops of blood or spotting. But it's important to note that implantation bleeding is different for every person. It can be heavier or lighter depending on your body.
If you're at all concerned about how much you're bleeding, it's best to check in with your doctor for reassurance.
When does implantation bleeding occur?
Implantation bleeding typically happens around seven to 15 days after conception and lasts for a few days.
You may find that it happens around the time you'd expect your period if you have a regular, 28-day cycle, but it'll be much lighter than menstrual bleeding.
Is it implantation bleeding or a period?
Implantation bleeding is usually much lighter than a usual period and can be accompanied by some other early pregnancy symptoms which can help you. If you usually have light or irregular periods, the following points may help you differentiate between the two.
| Implantation bleeding | Menstrual bleeding | |
| Duration | 1-4 days | 4-7 days |
| Blood flow | Light or spotting | Heavier |
| Blood colour | Light pink or dark brown | Bright red |
| Cramping | Light and doesn't increase in intensity | Heavier and lasts longer |
| Other symptoms | Nausea | Breakouts, bloating and PMS |
| Pregnancy test result | Positive | Negative |
Is implantation bleeding common?
Implantation bleeding happens in 15 to 25% of early pregnancies, and not all pregnant people experience implantation bleeding, so if you haven't noticed any symptoms yet, this doesn't mean you're not pregnant.
If you do not see any bleeding, it is not a sure sign that you are not pregnant.
When should I get checked if I am bleeding in early pregnancy?
Light bleeding or spotting in early pregnancy is common, but any implantation bleeding that you do experience should be short-lived.
If you know you're pregnant and are experiencing heavy bleeding it could be a sign of something more serious (like a miscarriage, ectopic pregnancy, or an infection), so it's best to talk to your doctor or midwife about any bleeding you experience at any stage of pregnancy if you're feeling concerned.
Sources
- All you need to know about implantation bleeding - Clearblue
- Signs and symptoms of pregnancy - NHS (www.nhs.uk)
- Vaginal bleeding - NHS (www.nhs.uk)
- Assessment and Management of Bleeding in the First Trimester of Pregnancy - Snell - 2009 - Journal of Midwifery & Women's Health - Wiley Online Library
- What Is Implantation Bleeding and When Does It Occur? (whattoexpect.com)
- Implantation bleeding: Symptoms and causes - Flo
