It is effective but risky. Sperm can be present in pre-ejaculate fluid. Using this method to prevent pregnancy requires the man to have lots of self control.
http://answers.ask.com/Health/Reproductive/how_effectiv...
How Effective Is Withdrawal? ... Effectiveness is an important and common concern when choosing a birth control method. Like all birth control methods, the pull out method is much more effective when you do it correctly. ... If you cannot predict this moment accurately, withdrawal will not be as effective.
www.plannedparenthood.org/health-topics/birth-control/w... www.plannedparenthood.org/health-topics/birth-control/withdrawal-pull-out-method-4218.htm
you can very much get pregnant by a guy pulling out. it doesnt work. but for a LOT of girls it gets them pregnant ; if shes a week late why havent the two of you gotten her a test. its a lot more effective than asking people on the internet.
www.medhelp.org/posts/Womens-Health/How-effective-is-th... www.medhelp.org/posts/Womens-Health/How-effective-is-the-pull-out-method/show/35337
"Pulling out" is a pretty effective method of birth control when done right. I do agree, however, that you should both be ready in fairness to you and not to mention your child! ... I would have to say No. Pulling out is not 100% effective but its pretty close to it. Chances are your not. But thats my opinion!!!!
www.medhelp.org/posts/Womens-Health/Chances-of-Pg-after... www.medhelp.org/posts/Womens-Health/Chances-of-Pg-after-Pulling-Out/show/28692
Pulling out, or withdrawal, is not an effective method of preventing STIs because most disease-causing microorganisms do not depend on ejaculation for transmission. A condom will only help prevent the spread of STIs if you put it on before sex and leave it on the entire time you are having sex.
www.goaskalice.columbia.edu/1186.html
The "pulling out" method of birth control is not very effective under the best of circumstances. In your situation it would be even less effective, as there may have still been living sperm on his penis, or in his penis.
www.drspock.com/discussion/message/0,1812,34967,00.html
The sooner you take it during that 72-hour period, the more effective it is. EC is offered ... Withdrawing the penis before the man comes (pulling out) is not a reliable way to prevent pregnancy or STIs. Urinating or washing after sex may help remove some of the germs that cause some STDs, but does not prevent infection.
www.wellesley.edu/Activities/homepage/she/SaferSex/safe... www.wellesley.edu/Activities/homepage/she/SaferSex/safersex.html
Withdrawal (pull out) is not an effective method of birth control. Of women using the withdrawal method for one year, approximately 25% will get pregnant sometime during the course of that year. ... Withdrawal (pull out) is not an effective method of birth control. Of women using the withdrawal method for one...
www.askdramy.com/withdrawal.html