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Emergency Contraception (EC)

Safe, Effective Options Up to 5 Days After Sex

Emergency contraception (EC) is a safe and effective way to prevent pregnancy up to 5 days after penis–vagina sex. EC does not disrupt an existing pregnancy — it works by delaying ovulation or preventing fertilization.

At Boulder Valley Health Center (BVHC), we provide the full range of emergency contraception options and help you choose the method that works best for your body, your timeframe, and your comfort.

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What Is Emergency Contraception?

Emergency contraception (EC) is a safe and effective way to help prevent pregnancy after unprotected sex or if your birth control may not have worked as expected. It works best when taken as soon as possible, but some options remain effective for several days after sex.

Emergency contraception is safe for most people, including teens, adults, those who are breastfeeding, and people who cannot use regular hormonal birth control.

Emergency Contraception Offered at BVHC

We offer many forms of emergency contraception, so you can access the most effective option for your situation.

Levonorgestrel EC Pills (Plan B® and generics)

  • Works best within 3 days, but can work up to 5 days
  • Available without a prescription
  • Less effective for people over 165 lbs, but still safe to take
  • Does not cause abortion

Copper IUD (Paragard®)

  • The most effective emergency contraception available.
  • Works up to 5 days after sex
  • Over 99% effective
  • Provides 12+ years of non-hormonal birth control

Levonorgestrel IUD (Mirena® or Liletta®)

  • Works as emergency contraception when inserted within 5 days
  • Provides 8 years of pregnancy prevention
  • Good for people who prefer hormonal options

Which EC Method Is Best For Me?

Our providers will review:

  • Time since sex
  • Body weight (matters for pill effectiveness)
  • Comfort with pills vs. IUDs
  • Whether you want ongoing birth control
  • Medical eligibility

We’ll help you choose the best option quickly and with no judgment.

Have questions? Call us at (303) 442-5160

What to Expect at Your EC Visit

Same-day or next-day appointments when possible

A short conversation about timing and symptoms

Option to take EC pills during the visit

If choosing an IUD: insertion during the same appointment when possible

Confidential, supportive care for people of all ages

Clear instructions on what to expect afterward

Our Commitment to Reproductive Freedom

BVHC proudly supports full reproductive freedom, including your right to:

  • Access emergency contraception without judgment
  • Make decisions about your own body
  • Understand your options clearly
  • Receive care that is inclusive, trauma-informed, and gender-affirming

Everyone deserves access to safe, respectful, high-quality EC care.

FAQs About Emergency Contraception

No. EC prevents pregnancy before it begins. It does not disrupt an existing pregnancy.

As soon as possible — but:

  • Pills work up to 5 days
  • IUDs work up to 5 days and are the most effective option

Plan B® may be less effective for people over 165 lbs. Ella® or an IUD is recommended in those cases.

Yes. It is safe to use EC multiple times, but it’s not meant as regular birth control. We can help you choose ongoing contraception if desired.

No. In Colorado, you can access EC confidentially at any age.

Yes. EC is safe and effective after assault. We also offer STI testing, pregnancy testing, trauma-informed support, and referrals if needed.

Your next period might be early, late, or slightly different. You can take a pregnancy test 3 weeks after using EC.

Yes. Your privacy is protected no matter your age or situation.

Patient Resources

Trusted EC Information

Bedsider.org

Emergency Contraception | Types, Cost, Side Effects & Effectiveness

ReproductiveAccess.org

Reproductive Health Access Project | Emergency contraception: which EC is right for me?

Office on Women's Health

Birth control methods.

Schedule Your Emergency Contraception Appointment at BVHC

Your health. Your choice. Your freedom.

Emergency contraception works best the sooner you take it. We offer same-day and next-day appointments when possible.

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