How far into pregnancy you can get an abortion depends on the method used, where you live, and individual medical circumstances. In the United States, roughly four out of five abortions happen at or before 9 weeks of pregnancy, when the process is simplest and carries the lowest risk of complications. But different procedures are available at different stages, and state laws create a patchwork of gestational limits that can range from around 6 weeks to beyond 24 weeks.
How Pregnancy Weeks Are Counted
Gestational age is measured from the first day of your last menstrual period, not from the date of conception. This means you’re already considered about two weeks “pregnant” before an egg is even fertilized. A pregnancy described as “10 weeks” is 10 weeks since that last period started, which is roughly 8 weeks since conception. Every gestational limit on abortion, whether set by a law or an FDA label, uses this same counting method. If you’re unsure of your dates, an ultrasound (typically offered around 12 weeks) can give a more precise estimate.
Medication Abortion: Up to 10 Weeks
The FDA approves medication abortion through 10 weeks of pregnancy (70 days from the first day of your last period). This involves two drugs taken in sequence. The first blocks a hormone the pregnancy needs to continue, and the second, taken 24 to 48 hours later, causes the uterus to contract and empty. The original FDA approval in 2000 covered pregnancies up to 7 weeks; that was extended to 10 weeks in 2016.
Within this window, medication abortion is highly effective. Research on pregnancies beyond 9 weeks suggests it still works in the vast majority of cases. A study of more than 200 people who self-managed medication abortion between 9 and 16 weeks found that about 89% had a complete abortion without needing any additional procedure. Still, effectiveness is highest and the process is most straightforward at earlier gestational ages.
First-Trimester Procedures: Up to 13 or 14 Weeks
Vacuum aspiration, sometimes called a suction procedure, is the standard in-clinic option during the first trimester. It can be done with a manual or electric device. Clinical trials have compared both between 10 and about 14 weeks and found no meaningful difference in how long the procedure takes or how well it works. The entire visit, including preparation, typically lasts a few hours, though the procedure itself is much shorter.
Many clinics offer vacuum aspiration starting as early as 5 or 6 weeks and continuing through 13 or 14 weeks. At these earlier stages, the procedure is quick and complication rates are very low.
Second-Trimester Procedures: 14 to 24 Weeks
After about 14 weeks, the standard surgical approach shifts to a procedure called dilation and evacuation, or D&E. This requires more preparation because the cervix needs to be gradually opened beforehand, often using small dilators placed hours or even a day in advance. At 20 weeks and beyond, providers use additional cervical preparation techniques to ensure safety.
The vast majority of second-trimester surgical abortions use this method. It requires more specialized training than first-trimester procedures, which means fewer providers offer it. That scarcity can itself cause delays: the further along a pregnancy is, the harder it can be to find a nearby clinic, and the wait for an appointment can push the gestational age even higher.
Third-Trimester Abortion: Rare and Restricted
Third-trimester abortions, those after about 24 weeks, are uncommon and almost always tied to severe medical situations. The American Medical Association recommends that abortions not be performed in the third trimester except in cases of serious fetal anomalies incompatible with life. While preserving the life or health of the pregnant person is always a valid medical reason, at this stage the fetus is generally viable outside the womb, so delivery rather than termination is the typical approach when maternal health is at risk.
Only a handful of providers in the country perform third-trimester abortions, and the process typically involves labor induction over the course of several days.
State Laws Create Different Cutoffs
Since the Supreme Court’s 2022 Dobbs decision overturned the nationwide right to abortion, individual states set their own gestational limits. Some ban abortion after detection of cardiac activity, which can occur around 6 weeks, often before a person realizes they’re pregnant. Others set limits at 12, 15, 20, or 24 weeks. Several states have no gestational limit at all, and more than a dozen have near-total bans with limited exceptions.
Mandatory waiting periods in some states also play a role. Laws requiring a waiting period between a counseling appointment and the actual procedure have been shown to push abortions later in pregnancy. A delay of even one or two weeks can shift someone from qualifying for a simpler, earlier procedure to needing a more involved one.
Why Earlier Access Matters Medically
CDC surveillance data from 2021 confirms what the research consistently shows: complications are lowest when abortion occurs early. About 80% of abortions that year took place at or before 9 weeks. The risk of any complication rises with each additional week of pregnancy, though abortion remains safer than childbirth at every gestational age where it is performed.
The practical reality is that delays, whether caused by difficulty finding a provider, state-mandated waiting periods, travel distance, or cost, can shift people into later gestational windows where fewer options exist and the process becomes more complex. Knowing how weeks are counted and what’s available at each stage helps you act on the timeline that works best for your situation.