Spotting during pregnancy looks like a few drops of pink, red, or dark brown blood on your underwear or on toilet paper when you wipe. It’s light enough that a panty liner won’t fill up, and you might only notice it once or twice during the day. It’s one of the most common pregnancy symptoms, especially in the first trimester, and in many cases it resolves on its own.
How Spotting Looks Compared to Bleeding
The color of spotting can range widely. Fresh spotting tends to look pink or light red, while older blood that took longer to travel from the cervix appears dark brown. Some people describe it as looking like rust-colored streaks or faint smudges. The key visual distinction is volume: spotting is drops, not a flow. If blood is collecting enough that you need a pad to protect your underwear, that’s considered bleeding rather than spotting.
Heavy bleeding, by contrast, means soaking through a pad every few hours. That’s a different situation entirely. The American Academy of Family Physicians defines an emergency threshold as soaking through more than two pads per hour for two consecutive hours. Spotting looks nothing like this. It’s scattered, intermittent, and often so faint you might question whether you saw it at all.
Implantation Bleeding in Early Pregnancy
The earliest spotting many people notice happens before they even know they’re pregnant. About 10 to 14 days after ovulation, a fertilized egg attaches to the uterine lining, and this can cause a small amount of blood to appear. Implantation bleeding is typically pink or brown, never bright red, and it lasts anywhere from a few hours to about two days.
Because the timing overlaps with when a period would be expected, many people mistake implantation bleeding for a light or early period. The difference is that implantation bleeding stays very light, doesn’t increase in flow, and stops on its own. A period usually starts light, gets heavier, and lasts several days. If you’re seeing faint pink or brownish spotting that disappears within a day or two, it could be the first sign of pregnancy rather than a cycle starting.
Why the Cervix Bleeds More Easily
During pregnancy, rising estrogen levels cause a change in the cervix called cervical ectropion. Softer, more delicate cells from the inner cervical canal become exposed on the outer surface, making the cervix more sensitive and prone to light bleeding. This is completely normal and doesn’t affect the pregnancy.
Common triggers include sex, a pelvic exam, or even a Pap smear. The spotting that follows is usually pink or light red, appears within a few hours of the trigger, and stops quickly. If you notice a pattern of spotting after intercourse, this is almost always the explanation. It doesn’t mean you need to avoid sex, but it’s worth mentioning to your provider so they can confirm what’s happening.
Subchorionic Hematoma
A subchorionic hematoma is a pocket of blood that collects between the placenta and the uterine wall. It’s one of the more common causes of first-trimester bleeding, and it can look like anything from light spotting to heavier bleeding with small clots. The appearance varies because it depends on the size of the blood collection and how quickly it drains.
These are diagnosed by ultrasound, where they appear as a crescent-shaped collection of blood near the placenta. Most subchorionic hematomas resolve on their own without affecting the pregnancy. Some people with a small hematoma never bleed at all, and the finding only shows up incidentally on a routine scan. Others notice intermittent brown spotting for several weeks as the blood slowly works its way out.
Spotting That Needs Attention
Light vaginal bleeding combined with pelvic pain is one of the first warning signs of an ectopic pregnancy, where a fertilized egg implants outside the uterus (usually in a fallopian tube). The bleeding itself can look like ordinary spotting, pink or light red and not particularly heavy, which is why the accompanying symptoms matter more than the appearance of the blood. Severe or one-sided abdominal pain alongside any vaginal bleeding in early pregnancy warrants immediate medical evaluation.
In the second and third trimesters, the concerns shift. Bright red vaginal bleeding after 20 weeks, typically painless, is the hallmark of placenta previa, a condition where the placenta covers part of the cervix. Sometimes this starts as minor spotting before a larger bleeding episode. The bleeding can be triggered by sex, a medical exam, or contractions, but often there’s no obvious cause at all. Any vaginal bleeding in the second or third trimester should prompt a call to your provider, even if it looks like just a few drops.
What to Track If You’re Spotting
If you notice spotting, paying attention to a few details will help your provider assess what’s going on. Note the color (pink, red, or brown), whether it happened once or is recurring, how much you’re seeing (a few drops versus enough to mark a liner), and whether it came with any other symptoms like cramping, pain, or unusual discharge. Also note any potential triggers: Did it start after sex, exercise, or a vaginal exam?
Brown spotting is generally older blood making its way out and is less likely to signal an active problem. Bright red blood is fresher and more likely to prompt further evaluation, especially if the volume increases over hours rather than tapering off. Spotting that stays light, lasts a short time, and isn’t accompanied by pain is the most reassuring pattern, but any bleeding during pregnancy is worth reporting to your provider so they can decide whether imaging or bloodwork is needed.