Pulling out, known medically as the withdrawal method, is a form of birth control, but it’s one of the least reliable options available. With perfect use every single time, about 4 out of 100 couples will become pregnant within a year. With typical use, that number jumps to 18 out of 100, meaning roughly 1 in 5 couples relying on withdrawal will experience an unintended pregnancy over 12 months.
How Withdrawal Compares to Condoms
The numbers for withdrawal and male condoms are surprisingly close. Condoms have a perfect-use failure rate of 3% compared to 4% for pulling out, and a typical-use failure rate of 17% versus 18%. That narrow gap can be misleading, though, because condoms also reduce the risk of sexually transmitted infections while withdrawal provides zero STI protection. The CDC is clear on this point: withdrawal does not protect against any STI, including HIV.
The gap between perfect and typical use matters more than the gap between methods. Perfect use means the male partner withdraws completely, every single time, well before ejaculation. In real life, that doesn’t always happen. Arousal, timing, and the unpredictability of the moment all make consistent execution difficult.
Why Pre-Ejaculate Makes It Risky
One reason withdrawal fails even when timing seems right is pre-ejaculatory fluid, the small amount of liquid released from the penis during arousal and before orgasm. A study published in Human Fertility examined 40 samples from 27 men and found that 41% of the men produced pre-ejaculatory fluid containing sperm. In 37% of subjects, a reasonable proportion of that sperm was actively moving, meaning it was capable of fertilizing an egg.
The actual number of sperm in pre-ejaculate is much lower than in a full ejaculation. But in many of these men, the concentration and motility of sperm looked similar to what would be considered fertile in a normal semen sample. The key takeaway is that pregnancy can occur even if your partner pulls out perfectly on time, because sperm may have already been released.
There’s also the question of back-to-back sex. Sperm from a previous ejaculation can linger in the urethra. Research suggests that urinating between rounds washes out remaining sperm in most men, but this isn’t guaranteed, and it’s not a step most couples think about in the moment.
What Perfect Use Actually Requires
For withdrawal to work as well as the statistics suggest it can, the male partner needs to pull the penis fully out of the vagina and away from the vulva before any ejaculation occurs. Ejaculation typically happens right before or at the peak of orgasm, but pinpointing the exact moment is difficult, and it varies between individuals and even between encounters.
Even with a well-timed withdrawal, semen can land on the vulva or upper thighs, and sperm near the vaginal opening can still travel inside. This is another reason the method’s real-world failure rate is higher than its theoretical one. It requires a level of awareness and self-control during the least controlled moment of sex, and there’s no room for error.
How Many People Use It
Withdrawal is more common than many people assume. Among sexually active young adults aged 15 to 24 in the United States, about 14% of women and 17% of men reported using withdrawal at their most recent sexual encounter. Of those, roughly 6 to 7% used it as their only method of birth control, with no backup like a condom or hormonal contraception.
Many couples use withdrawal alongside another method rather than on its own. Pairing it with condoms, hormonal birth control, or fertility awareness significantly reduces the chance of pregnancy compared to relying on withdrawal alone.
What to Do If Withdrawal Fails
If your partner doesn’t pull out in time, or ejaculates on or near your genitals, emergency contraception is an option. The World Health Organization identifies failed withdrawal, including ejaculation in the vagina or on external genitalia, as a specific reason to consider emergency contraception.
Oral emergency contraception works best when taken as soon as possible and can be effective up to 120 hours (5 days) after unprotected sex, though effectiveness decreases with every hour you wait. A copper IUD can also be inserted within 5 days as an emergency measure and doubles as ongoing birth control afterward.
Where Withdrawal Fits Among Your Options
Withdrawal is better than no protection at all. But it sits at the lower end of effectiveness compared to most modern contraceptive methods. Long-acting options like IUDs and implants have failure rates below 1%. Hormonal pills, patches, and rings fall in the 7 to 9% range with typical use. Withdrawal’s 18% typical-use failure rate means it’s roughly twice as likely to result in pregnancy as the pill.
If you’re using withdrawal because other methods aren’t accessible or cause side effects, combining it with fertility awareness (tracking your cycle to avoid sex during your most fertile days) can lower the risk. But if preventing pregnancy is a priority, more reliable methods exist, and withdrawal works best as a backup layer rather than a primary strategy.