Plan B

What is it and how does it work?

Emergency contraceptives, like Plan B, are drugs and products used to prevent pregnancy or prevent the implantation of a new pregnancy. It is not recommended for repeated use as regular birth control.

What if it doesn’t work and I still get pregnant?

If you are having any symptoms of pregnancy or get a positive pregnancy test after taking Plan B, we can help. Contact us for free pregnancy testing and ultrasound. Our caring and supportive team will help you understand all your pregnancy options.

If abortion is a pregnancy option for you, we will provide free pre-abortion services including ultrasound and education on your options and patient rights.

How does it work?

Sperm can live inside your body for up to seven days, making it possible to get pregnant days after having sex. Plan B is a large dose of birth control medication that can prevent pregnancies in three ways:

Prevents ovulation by keeping the egg from being released

Prevents fertilization by stopping the sperm from fertilizing the egg

Prevents implantation of an embryo (fertilized egg) in the uterus by cutting off nourishment to the embryo.

How effective is Plan B?

Plan B is claimed to be 25% to 95% effective depending on how soon you take it after having sex, according to its manufacturer.


within 24 hours


within 25 – 48 hours


within 48 – 72 hours


after 72 hours

Factors you may consider:


Plan B has been shown to increase the risk of ectopic pregnancy, a life-threatening condition.


Plan B has not been approved by the FDA for use by teenagers and the effects on the health of teen girls is still largely unknown.


Many medications have drug interactions with Plan B, so if you are taking medication, check with your doctor to see if Plan B is safe for you.


Studies have shown Plan B to be less effective for women weighing more than 165 pounds.


Women who believe that life begins at conception may have a moral or spiritual conflict with taking Plan B because of the potential for the implantation of a young embryo to be interrupted, causing the death of the embryo.


Many studies have documented an increased risk of cancer with the use of birth control such as Plan B.


Plan B provides no protection against STD’s & HIV.


Small amounts of progestins are passed from mother to baby through breast milk of nursing mothers taking progestin-only pills for long-term contraception, resulting in detectable steroid levels in infant plasma.

What are possible side effects of Plan B?

As with most medications there are documented side effects to be aware of. If you have symptoms that persist for more than 48 hours or are severe, see your healthcare professional.


Abdominal pain




Breast tenderness



Irregular menstrual bleeding

Painful menstruation

Vaginal discharge

If you experience any of the following side effects, consult with a doctor immediately:

Itching and a rash

Uterine hemorrhage

Vaginal hemorrhage

Any effects that persist or worsen

Sudden or unusual cramps or pain in the stomach or belly

Plan B is a single dose medication. You should never give yourself additional doses. It is recommended that you visit your doctor within three weeks after taking Plan B to confirm that this medicine has not caused any harmful effects.

Our staff is on standby to help. We’ll answer your questions as quickly as possible!