Having placenta previa in one pregnancy does increase your risk of experiencing it again, though the exact recurrence rate varies. Most estimates place the chance between 4% and 8% after a cesarean delivery for previa, which is several times higher than the roughly 0.5% baseline risk in the general population. One smaller study found recurrence as high as 22% among women with a prior history, suggesting that individual risk factors like the number of prior surgeries play a significant role.
How Likely Is Recurrence?
The range in recurrence statistics reflects the complexity of the condition. A large review published in the American Journal of Obstetrics and Gynecology puts the recurrence rate at 4% to 8% following a cesarean delivery for previa. A study published in Cureus found that women with a history of placenta previa were roughly nine times more likely to have it again compared to women without that history. Another analysis from Israel reported a lower recurrence rate of about 3.2%, still representing a six-fold increase over baseline.
What this means in practical terms: the vast majority of women who had placenta previa will not have it again, but the odds are meaningfully higher than for someone who never had it. Your personal risk depends heavily on how many cesarean deliveries you’ve had, how many total pregnancies or uterine procedures are in your history, and where the placenta happens to implant next time.
Why a Cesarean Scar Changes Placental Position
Most cases of placenta previa are delivered by cesarean section, and that scar becomes the single biggest factor influencing placental location in a future pregnancy. The scar tissue has a reduced blood supply compared to normal uterine lining. When an embryo implants near or on that scar, the developing placenta may spread outward and downward toward the cervix to compensate for the poor blood flow, increasing the chance of previa.
The scar also physically reshapes the uterine cavity. Contracture from healing can pull the interior space slightly, positioning a fertilized egg closer to the cervix than it would otherwise land. On top of that, scar tissue in the lower part of the uterus can block the normal upward “migration” of the placenta that happens as the uterus stretches during the third trimester. In a typical pregnancy, a low-lying placenta detected early on moves away from the cervix as the uterus grows. A cesarean scar can prevent that shift, keeping the placenta low.
Research confirms that higher numbers of previous cesarean deliveries, uterine surgeries, or prior abortions all increase the likelihood that the placenta will attach to the anterior wall near a previous incision site. When the placenta does attach at the scar, it also raises the risk of a related condition called placenta accreta spectrum, where the placenta grows too deeply into the uterine wall and becomes difficult to separate at delivery.
Preterm Birth Risk Carries Over
One of the less obvious ways placenta previa affects a future pregnancy has nothing to do with whether previa recurs. If your first pregnancy with previa resulted in a preterm delivery, particularly before 34 weeks, you carry an independently higher risk of spontaneous preterm birth in your next pregnancy even if the placenta is in a completely normal position.
A study tracking women through consecutive pregnancies found that those who delivered preterm due to placenta previa were about 3.6 times more likely to have a spontaneous preterm birth the next time around, regardless of where the placenta attached. This elevated risk was independent of other known preterm birth risk factors. The mechanism isn’t entirely clear, but the finding is important: it means your obstetric team should be monitoring for preterm labor signs in a subsequent pregnancy even if your placenta looks perfectly placed on ultrasound.
If your previous previa pregnancy went to or near full term, this particular risk factor is much less relevant to you.
What Monitoring Looks Like Next Time
Because of the increased recurrence risk, your provider will pay closer attention to placental location throughout a subsequent pregnancy. A standard anatomy scan around 18 to 20 weeks will note where the placenta is sitting, and if it appears low, you can expect follow-up imaging.
A common clinical timeline looks like this: if the placenta is still low, a targeted ultrasound at 32 weeks checks both placental position and fetal growth. If previa is confirmed at that point, delivery is typically planned for 36 to 37 weeks. If the placenta is low-lying but not fully covering the cervix (within about 2 centimeters), a transvaginal ultrasound at 36 weeks helps determine whether it has migrated enough to allow a different delivery plan. When a previously low placenta does resolve, an additional scan between 34 and 36 weeks screens for vasa previa, a condition where fetal blood vessels cross near the cervical opening.
You may also have more frequent ultrasounds than usual if you’ve had multiple cesarean sections, since your provider will want to check whether the placenta has attached to the scar and whether there are signs of abnormally deep placental invasion.
Factors That Raise or Lower Your Risk
Not all women with a history of placenta previa face the same odds. Several factors tilt the scale:
- Number of prior cesareans: Each additional cesarean delivery increases the chance of previa and of accreta spectrum disorders. One prior cesarean raises the risk modestly; three or more raise it substantially.
- Number of prior pregnancies and uterine procedures: Dilation and curettage procedures, myomectomies, and other uterine surgeries all create scarring that can influence where the placenta attaches.
- Gestational age at prior delivery: If your previous previa pregnancy ended before 34 weeks, you face a higher baseline risk of preterm birth next time, independent of placental position.
- Placental location in the prior pregnancy: An anterior placenta sitting directly on a cesarean scar carries the highest risk profile for both recurrence and accreta.
Women whose only risk factor is a single prior previa that resolved on its own during pregnancy, or those who had previa but delivered vaginally (rare but possible with marginal previa), generally face a lower recurrence risk than those who had complete previa requiring cesarean delivery. The overall picture is that uterine scarring is the central driver. The more scarring you have, the more carefully your next pregnancy needs to be tracked.