There is no specific number of abortions that makes you infertile. Most elective abortions, whether medication-based or surgical, do not cause fertility problems or prevent future pregnancies. The real risks depend less on a count and more on the type of procedure, whether complications like infection or scarring occur, and how those complications are managed.
That said, each surgical procedure does carry a small cumulative risk of complications that can affect your ability to conceive. Here’s what the evidence actually shows.
Abortion Does Not Typically Cause Infertility
The broad medical consensus is reassuring: elective abortions most often do not cause fertility issues or problems with future pregnancies. Medication abortions in particular show no detrimental effect on future fertility. One study tracking women after first-trimester medication abortion found that their infertility rates were the same as those reported in the general population, with pregnancy rates at two years matching previously published norms. The only measurable difference was slightly lower conception rates in the first three months after the procedure, which resolved on its own.
Surgical abortions also have little impact on future pregnancies in most studies. Some research has found a slight increase in the risk of preterm birth, miscarriage, or low birth weight in later pregnancies, but other studies found no such increase at all.
Where the Real Risks Come From
The concern with repeated abortions isn’t about hitting some threshold number. It’s about the cumulative chance of two specific complications: uterine scarring and infection. Either one can impair fertility, but both are uncommon with modern procedures.
Uterine Scarring (Asherman Syndrome)
When a surgical instrument is used to remove tissue from the uterus, there’s a small chance it can damage the uterine lining and cause scar tissue to form. This condition, called Asherman syndrome, can interfere with embryo implantation and make it harder to get pregnant. In a study of over 2,500 women who had uterine procedures after abortion, the overall incidence was 1.6%. That’s low, but having three or more prior abortions increased the risk by 4.6 times compared to having fewer. The good news is that Asherman syndrome can often be treated with surgery to remove the scar tissue.
This risk applies primarily to procedures that use instruments to scrape the uterine wall (dilation and curettage). Modern surgical abortions more commonly use vacuum aspiration, which is gentler on the lining, though long-term fertility comparisons between the two techniques are limited.
Post-Procedure Infection
Infection after abortion is rare but carries more serious fertility consequences when it does occur. The rate of infection after surgical abortion is about 0.5%. For medication abortion, rates are even lower, ranging from 0.01% to 0.45% depending on the specific regimen used.
When infection does develop and progresses to pelvic inflammatory disease, the stakes change significantly. In one study, 9.7% of women who developed pelvic inflammatory disease after an abortion reported infertility lasting more than a year, compared to just 1.9% of women who had no post-procedure infection. Pelvic inflammatory disease can scar the fallopian tubes, blocking the path between the ovary and the uterus. This type of damage is harder to reverse than uterine scarring.
Repeated Procedures and Cervical Risks
Another area where repeated procedures matter is cervical function during future pregnancies. Surgical abortions require dilating the cervix, and doing this multiple times may weaken it. A weakened cervix can open too early during a later pregnancy, raising the risk of preterm birth or pregnancy loss. This is sometimes called cervical insufficiency.
A systematic review and meta-analysis found that a history of induced abortion roughly doubled the odds of cervical dysfunction in a future pregnancy. Surgical abortions carried a higher risk than medication abortions, with about four times the odds of cervical problems. The risk also scaled with the number of prior procedures: one prior abortion roughly doubled the odds, two abortions increased them about fourfold, three abortions roughly eightfold, and four or more abortions raised the odds about twelvefold. These are relative increases compared to someone with no prior abortions, and the baseline risk of cervical insufficiency is itself uncommon, so even a twelvefold increase still represents a small absolute number of affected pregnancies. But the pattern is clear: more surgical procedures mean more cervical risk.
This is one reason medication abortion, which doesn’t require cervical dilation, carries fewer long-term reproductive risks than surgical options.
How Quickly Fertility Returns After an Abortion
Fertility returns fast. After a first-trimester abortion or miscarriage, ovulation can resume within two weeks. After a second-trimester procedure, it typically returns within four weeks. This means pregnancy is possible almost immediately, even before your next period arrives. The World Health Organization recommends waiting at least six months after an abortion before trying to conceive again, primarily to allow the body to recover fully.
What Actually Matters for Your Fertility
If you’re concerned about future fertility after one or more abortions, the most important factors are whether your procedures were uncomplicated and whether any infections were promptly treated. A person who has had several uncomplicated medication abortions faces a very different risk profile than someone who has had multiple surgical procedures with complications.
The type of procedure matters more than the number. Medication abortions show essentially no impact on future fertility. Surgical abortions carry small risks that grow with repetition, particularly for uterine scarring and cervical weakness. And infection, though rare, is the complication most likely to cause lasting fertility problems regardless of how many procedures you’ve had. One badly managed infection poses a greater threat to future fertility than multiple uncomplicated abortions.