When Should I Take A Pregnancy Test After Plan B?

You had unprotected sex last night and took Plan B (morning-after pill), but now you are confused about when to take a pregnancy test after Plan B. The article is the one-stop solution to knowing when to take a pregnancy test after Plan B, how Plan B work, etc.

When Should I Take A Pregnancy Test After Plan B?

It’s recommended to wait at least 7 to10 days after taking Plan B before taking a pregnancy test. The second thing is that the pregnancy test can’t detect early pregnancy. To know more, keep reading the article till the last line.

What is Plan B?

Plan B, also known as the “morning-after pill,” is an emergency contraceptive. It’s used to prevent pregnancy after unprotected intercourse or a failure of a primary method of birth control. Plan B contains the hormone levonorgestrel, which can prevent ovulation or fertilization if taken within a certain time frame after unprotected intercourse.

What is Plan B

It’s available over the counter and by prescription. It is to be noted that Plan B is not recommended for routine use as a contraceptive and should not be used as a regular method of birth control. It’s intended as a backup method to be used in emergencies.

Read More:- How Long does it Take to Miscarry A 5 Week Pregnancy?

How Does the Morning After Pill Work?

The morning-after pill delays the Ovulation process, which means the egg will not release to meet with the sperm. The sperm can survive up to 5 to 6 days in the female reproductive organs. So it is obvious to worry about getting pregnant after unprotected sex.

Plan B can only protect you from becoming pregnant if you have taken pills to avoid pregnancy after 72 hours. But if you get pregnant, that means Plan B didn’t work for you, as Plan B can decrease the risk of pregnancy by up to 89%. There are few chances to get pregnant with Plan B. The sooner you take the morning-after pill it will be effective for you.

Once you conceive and get the pregnancy test positive, you need to consult your midwife for further doing. Plan B is not an abortion pill, so after conception, there is no benefit to taking a morning-after pill.

Side effects of taking Plan B

Here see the most common side effect to take Plan B that you may experience:

  • Cramps
  • Breast tenderness
  • Dizziness
  • Fatigue
  • Headache
  • Nausea/vomiting
  • Vaginal bleeding

What is the Right Time to Take a Pregnancy Test After Plan B?

Only a pregnancy test can detect whether you are pregnant or not. But the problem is when you should take a pregnancy test after Plan B. As I mentioned in the article, the pregnancy test can detect pregnancy only after one week of conception, so you must wait at least one week or ten days to take a pregnancy test after Plan B.

Note:- morning-after pill is not 100% effective at preventing pregnancy, and it’s possible to become pregnant even if you’ve taken it.

The hormone in Plan B, levonorgestrel, can temporarily affect the levels of other hormones in your body, which can cause a false negative result on a pregnancy test. Additionally, it takes time for pregnancy hormones to build up enough in your body to be detected by a pregnancy test.

If you get back your periods to normal after one week, you need not take a pregnancy test after Plan B. Here are other conditions when you need to take a pregnancy test after taking the contraceptive Plan B:

Missed Period

Missed Period

If you miss your period, it is an alarm to take the pregnancy test after Plan B. The contraceptive pills may delay or early period than usual. So, you should be familiar with this fact about taking Plan B. You may face light bleeding or spotting within a few days after taking the morning-after pill, so don’t consider it your regular period. It is the most common side effect of taking Plan B. So, if you missed your period, you should take a pregnancy test after Plan B.

Having Early Pregnancy symptoms

The Plan B can mimic pregnancy symptoms like headache, vomiting, breast pain, etc. But if you suspect you are pregnant, you should take a pregnancy test after Plan B within one week to confirm your pregnancy.

For Confirmation

In most cases, Plan B works up to 99%, but if you delay your period and want to confirm, then take a pregnancy test.

What if I Get a Negative Pregnancy Test After Plan B?

Suppose you don’t get your period back after about one week and take a pregnancy test after Plan B. You get negative pregnancy results. But still, if you have doubt you are pregnant, you need to take another pregnancy test at least after three weeks to know your pregnancy status. In the meantime, make sure to avoid sexual activity.

Negative Pregnancy Test After Plan B

After three weeks, if you get a pregnancy test negative, that means you are not pregnant. The storm of mystery end here. Be relaxed, and you are not pregnant. But you need to consult your healthcare provider to know the reasons for the delaying period. Remember:- Other things other than pregnancy can cause period delay.

What If I Get a Positive Pregnancy Test After Plan B?

Getting a positive pregnancy test can make you worry. But you need not worry. Just feel calm and think about your unwanted pregnancy. Contact your healthcare provider as they can help you to decide about your pregnancy. To keep the pregnancy or not is your personal decision. Don’t panic. Analysis of the circumstances and take the best decision.


You have to wait for at least one week to take a pregnancy test after Plan B, as a woman’s body also takes time to produce pregnancy hormones that can be detected through a pregnancy test kit to confirm pregnancy.

As an emergency contraceptive, Plan B can be a useful option for people who have had unprotected intercourse or experienced a contraceptive failure and want to prevent pregnancy. It’s safe to use, with a low risk of side effects and is available without a prescription.


Here are the answers to the most asked questions about the pregnancy test after Plan B that will help you to know more about the relationship between the plan b and pregnancy test:

Q. Where can I buy the morning after pill?

A. You can buy the morning after pill from the pharmacy, a GP, or a sexual health clinic or purchase it online.

Q. How long after taking a Plan B should you take a pregnancy test?

A. Taking Plan B can cause your period to be delayed or earlier than usual so confirm whether it worked for you. You should take the pregnancy test 21 days after you take the pill.

Q. Can I take a pregnancy test 2 days after Plan B?

A. It has no benefit as the pregnancy test can’t detect pregnancy until 7 to 10 days after conception. You have to wait at least a minimum of 10 days.

Q. Will Plan B make my period late?

A. Plan B contains levonorgestrel, a synthetic progestin that can affect the menstrual cycle.

Q. Can you get a positive pregnancy test after taking a morning-after pill?

A. It is possible to get a positive pregnancy test result after taking a morning-after pill, also known as emergency contraception, as the medication is not 100% effective in preventing pregnancy.

Q. Can Plan B cause infertility?

A. There is no evidence to suggest that Plan B causes infertility. Emergency contraception like Plan B is a safe and effective way to prevent pregnancy after unprotected intercourse.

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