How effective is Plan B, and how long is it effective for?

Whether you forgot to take the pill or the condom broke, you placid have an choice for preventing pregnancy—but you have to act fast. plan B One-Step is a morning-after pill that can prevent pregnancy after unprotected sex or birth control failure. Emergency contraception can offer peace of take care, but many women even wonder : How effective is Plan B ?

How plan B works

plan B is a progesterone drug that contains the hormone levonorgestrel. Levonorgestrel prevents pregnancy in different ways, depending on where you are in your menstrual cycle. It can temporarily stop the passing of an egg from an ovary or prevent a inseminate egg from attaching to the uterus. plan B works if taken within 72 hours after a regular parentage control method acting fails or within 72 hours after unprotected sexual intercourse .
once absorbed into the bloodstream, which normally takes a pair of hours, levonorgestrel starts to affect the ovaries or uterine line. Although it ’ second rare, some women may throw up within two hours of taking a plan B pill. If this happens to you, it ’ south best to follow up with your healthcare supplier and ask whether or not you should take a second dose.

You can take design B at any time during your cycle, but it ’ s merely meant to be used as an emergency contraceptive pill. Because taking an emergency contraceptive affects your hormones and fights your body ’ sulfur natural functions, it can often cause side effects. here are some of the most coarse side effects that women know :

  • nausea
  • Lower abdominal pain
  • Breast affection
  • fatigue
  • Spotting/changes in menstrual shed blood
  • dizziness
  • headache

If you ’ ve taken plan B and start to experience severe lower abdominal pain three to five weeks after taking it, you should seek aesculapian advice deoxyadenosine monophosphate soon as possible. Having this specific side effect in this timeframe may mean that you have an ectopic pregnancy, which is a pregnancy that happens outside the uterus. Ectopic pregnancies can be dangerous, which is why it ’ s so important to talk to a healthcare professional right aside if you experience this symptom .

How effective is Plan B ?

plan B is a very effective hand brake contraception pill. It works well to prevent pregnancy within three days of an unprotected sexual activity act, but is most effective ( > 97 % ) when taken within 24 hours of the incident, says Madeline Sutton, OB-GYN, a medical epidemiologist and former Commissioned Corps Officer at the CDC. A morning-after pill like Plan B can prevent pregnancy 75 % to 89 % of the time if you take it within three days of unprotected sex .
evening though there ’ s no limit to how many times you can take plan B, taking more than one drug won ’ t make it more effective. If you have unprotected sex again the day after taking design B, then you should take another dose. Take one pill for every act of unprotected sex, but remember that design B is not a utility for unconstipated give birth control. Talk to your healthcare supplier about the most allow form of birth control for you .

Who should not take plan B ?

even though plan B is identical effective, it isn ’ t right for everyone and is less effective under the follow circumstances :

  • It ’ mho less effective the longer you wait to take it, then take it vitamin a soon as possible .
  • It ’ s not effective if you ’ re already ovulating .

If you have a BMI that ’ mho 30 or greater, a bull IUD or the Ella morning-after pill may be better options for you. The Paragard ( copper ) IUD is about 99.9 % effective at preventing pregnancy if it is put in within five days after unprotected sexual activity, and once inserted, can prevent pregnancy for up to 12 years .
Ella emergency contraception works to prevent pregnancy up to five days after sexual activity and lowers the gamble of pregnancy by about 85 %. however, you should not take design B or other morning-after pills containing levonorgestrel if you have taken Ella since your end period .
note : Unlike the design B pill, the Ella morning-after pill requires a prescription drug from a doctor to obtain. The Paragard IUD is available by prescription and through your repair or family plan clinic. You ’ ll need your OB-GYN to insert the IUD, so if you decide to go that road, call the office a soon as potential and explain the site so they can bring you in promptly to insert the IUD .

plan B interactions

Certain medications and herb may besides decrease the potency of plan B because they contain enzymes that reduce the concentration of progestins in the lineage. Examples of such medicines and herbal products include :

plan B does not prevent STDs

Another thing to be mindful of is that design B doesn ’ thymine protect against sexually convey infections. The only way to protect yourself from HIV/AIDS, genital herpes, chlamydia, hepatitis, or other STDs is to correctly and systematically use latex condoms or practice abstinence. Some vaccines can prevent hepatitis B and HPV but will not protect against other STDs. The CDC recommends that children get their first venereal disease of the HPV vaccine at age 11 to 12, but the vaccine is besides recommended for everyone up to age 26 ( and sealed adults ages 27 to 45 years, depending on risk ) if they haven ’ triiodothyronine been vaccinated .
RELATED: Should you get the hepatitis B vaccine?

How do you know if Plan B worked ?

The only way to know if Plan B has prevented pregnancy is to wait for your adjacent menstruation. If your period arrives more than a week late, you may want to consider taking a pregnancy test. Some women will experience light bleed after taking plan B and may take this as a augury that it ’ sulfur worked to prevent pregnancy. however, spotting is an expect side effect of the morning-after pill and international relations and security network ’ t an indication that it has or has not prevented pregnancy. Getting your period and/or a negative pregnancy test is the only manner to know for sure .
plan B is not an abortion pill and will not end a pregnancy if you ’ re already fraught. If you ’ ve unintentionally taken plan B after you ’ re already pregnant, it ’ second good to know that there is no attest to suggest that it ’ south harmful to developing babies. If it doesn ’ deoxythymidine monophosphate exploit and you become pregnant, it ’ s improbable that it will cause injury to you or your child. Talking with your healthcare provider is the best way to learn about family design methods that will work best for you .

How long is Plan B effective ?

It ’ sulfur best to take plan B angstrom soon as possible since it works well within the first three days. You can take it up to five days after unprotected sexual activity, but it won ’ deoxythymidine monophosphate work a well by the fifth day. once absorb, it ’ s only effective for a maximal of about five days. After this amount of clock time, the hormones that were in the pill will have left the body. The utmost amount of time that it stays in the body coincides with the amount of time that sperm can live inside the female generative tract—about five to six days .

Bottom line—You can still get pregnant after taking plan B

It ’ randomness authoritative to note that you can still get meaning even after taking plan B. besides, if you take plan B after unprotected sex and then have unprotected sex again, you ’ ll want to take another pill. A long-run form of parentage control is the best way to prevent pregnancy. long-run birth see options include the birth control pill, IUDs, implants, shots, patches, latex condoms, and vaginal rings ( if used every clock time you have sex ) .

Where to buy Plan B

Adults can buy Plan B One-Step nonprescription without a prescription at most drugstores and pharmacies. You can besides get it from family plan centers or health department clinics .
unfortunately, Plan B can be quite expensive at about $ 38 to $ 58 per pill. Most indemnity companies will cover the monetary value if a healthcare provider prescribes it as an emergency contraceptive. If you ’ re not able to get a prescription, you may be able to get it for unblock or at a lower price from Planned Parenthood.

Another way to save money on the morning-after pill is SingleCare ’ randomness drug coupon. These coupons could give you discounts of up to 80 % off, but you will need to seek a prescription drug from your supplier first. SingleCare offers discounts on other forms of give birth restraint, besides. Learn how to find release parentage dominance without health indemnity here .

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