Emergency contraceptive methods
I had unprotected sex on a red day, what should I do?
It might happen that you had an unprotected intercourse on a red day, or that, in very few cases, the algorithm gives you incorrect green days. In the case of incorrect green days, you will receive a message informing you about this.
What to think about before using an emergency contraceptive
If you find yourself in the position to take an emergency contraceptive pill (also known as the morning after pill, Plan B, or EC pill) there are some very important things to keep in mind.
There are two different kinds of emergency contraceptive pills, depending on if it contains levonorgestrel or ulipristal acetate. Pills containing levonorgestrel needs to be taken within 72h (3 days) from unprotected intercourse, and pills containing ulipristal acetate can be taken within 120h (5 days) from unprotected intercourse.
Will it effectively prevent a pregnancy?
It's important to remember that the emergency contraceptive pill does not work if you have already ovulated. If taken before ovulation, it is highly efficient. You can see directly in your Natural Cycles app if you have ovulated yet or not.
A paper published in 2010 combined the results of two clinical trials and showed:
- of 1,714 women who received ulipristal acetate, 22 (1.3%) became pregnant
- of 1,731 women who received levonorgestrel, 38 (2.2%) became pregnant
Remember to always carefully read the instructions of use of the pill.
What to think about after taking an emergency contraceptive pill.
1. Add #EmergencyPill in your notes inside the app.
2. Don't measure your temperature once you have taken an emergency contraceptive pill until your natural period has shown up. Continuing to measure may lead to an inaccurate detection of ovulation and an incorrect fertility status.
Once you have taken the pill, you may experience some bleeding - this is not the equivalent to your period.
You can mark the bleeding that occurs after having taken the emergency contraceptive as spotting in the app if you'd like to keep track of it. Once you have your period (after roughly 2 weeks) you mark it as a period. Take a pregnancy test 3-4 weeks after the pill, regardless of if you've gotten your period or not, to rule out a pregnancy.
! Remember that you must continue using protection for the remainder of the cycle until you get your period.
Since ovulation has been postponed, your cycle will automatically become longer. Unfortunately, this may also have an effect on predictions but should get back to normal after a few cycles.
A study has shown that the insertion of a copper IUD is an effective means of emergency contraception. The IUD can be removed after a negative pregnancy test if wanted. The copper IUD is also an effective emergency contraceptive if you have already ovulated.
Remember that we always recommend the use of condoms during the red days. Read more here about different protective methods to use during red days.
If you are unsure to whether or not an emergency contraceptive method is needed, please feel free to send us an email.