Pregnancy spotting is most often pink, brown, or dark brown. Light red spotting can also occur, though bright red or heavy bleeding is less common and more likely to signal a problem. The color depends on when the blood left your body: fresh blood looks pink or red, while older blood that took longer to travel through the cervix turns brown.
Implantation Bleeding: The Earliest Spotting
The first spotting many people notice in pregnancy is implantation bleeding, which happens about 10 to 14 days after ovulation, right around the time you’d expect your period. When a fertilized egg attaches to the uterine lining, it can disturb tiny blood vessels, producing a small amount of discharge that is typically pink or brown. Dark brown is also common.
This bleeding is light enough that you won’t need a pad or tampon. It usually shows up as a few spots on underwear or when wiping, and it lasts anywhere from a few hours to a couple of days. The key way to tell it apart from a period is volume: a period lasts three to seven days and requires period products, while implantation bleeding produces far less blood and stops on its own quickly. If you see heavy red flow, it’s more likely a period or something else entirely.
First Trimester Spotting and Its Causes
Beyond implantation, spotting during the first trimester can be pink, red, or brown. Several things can trigger it.
Pregnancy hormones change the surface of your cervix, making it more sensitive and more likely to bleed with minor contact. A condition called cervical ectropion, where softer cells become visible on the outer cervix, is common in pregnancy and can cause light bleeding or blood-tinged discharge after sex or a pelvic exam. This spotting is usually pink or light red because the blood is fresh.
A subchorionic hematoma, a small pocket of blood between the pregnancy sac and the uterine wall, is another common cause of first-trimester bleeding. It can range from light spotting to heavier bleeding with clots. The color varies depending on how quickly the blood exits. Brown or dark red spotting often means the blood pooled before it came out, while brighter red suggests more active bleeding. Most subchorionic hematomas resolve on their own, but your provider will likely monitor them with ultrasound.
What Brown Spotting Means
Brown spotting is generally the least concerning color because it means the blood is old. It left a blood vessel hours or even days before it appeared on your underwear, and it oxidized along the way, turning from red to brown. You might see brown spotting after implantation, after sex, or after a cervical exam. It can also appear when a small amount of blood from any cause takes its time traveling through the cervical canal.
Brown spotting alone, without pain or heavy flow, is common in early pregnancy and often has no clear cause at all. That said, any spotting that persists for more than a day or two, increases in volume, or comes with cramping is worth reporting to your provider.
Pink Spotting vs. Red Bleeding
Pink spotting typically means a small amount of fresh blood has mixed with cervical mucus or other vaginal discharge, diluting its color. It’s one of the most frequently reported colors in early pregnancy and often shows up after minor cervical irritation or during the implantation window.
Red blood, especially bright red, means the bleeding is active and heavier. A few drops of red spotting can still be harmless, but if the flow increases to the point where you’re filling a pad, or if it’s accompanied by pelvic pain, dizziness, or shoulder pain, those are warning signs of complications like ectopic pregnancy. An ectopic pregnancy occurs when a fertilized egg implants outside the uterus, usually in a fallopian tube, and it requires immediate treatment. Early signs include light vaginal bleeding paired with sharp pelvic pain, and in severe cases, lightheadedness or fainting.
A practical threshold: bleeding that soaks through more than two pads per hour for two consecutive hours is a medical emergency regardless of color.
Late Pregnancy Spotting
Spotting in the third trimester has a different set of causes. The most well-known is the “bloody show,” which happens when the mucus plug that sealed your cervix during pregnancy begins to come away as your body prepares for labor. It can be red, brown, or pink, and it has a jelly-like, stringy texture, sometimes appearing as mucus streaked with blood rather than pure blood. The total amount is small, typically no more than a tablespoon or two.
Bloody show is normal in the final weeks of pregnancy and often means labor is approaching within hours to days. But heavy bleeding in the third trimester is a different situation. Bright red bleeding that is steady or soaking through pads can indicate complications with the placenta, and it needs immediate evaluation. The timing matters here: spotting that appears before the last few weeks of pregnancy could be a sign of preterm labor.
Quick Color Guide
- Brown or dark brown: Old blood, often from implantation or minor cervical irritation. Usually the least concerning.
- Pink: Small amount of fresh blood mixed with discharge. Common in early pregnancy from implantation or cervical sensitivity.
- Light red: Fresh blood in slightly larger amounts. Can be normal but worth monitoring.
- Bright red with heavy flow or clots: Active bleeding that needs prompt medical evaluation, especially with pain or dizziness.
Color alone doesn’t tell the full story. The combination of color, volume, duration, and accompanying symptoms like cramping or pain gives a much clearer picture of what’s happening. A few spots of brown on your underwear after sex is a very different situation from bright red blood soaking a pad in an hour.