Can You Insert an IUD on Day Six of Your Period? - Obstetrics and Gynecology

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Duration of IUD Placement


Hello, doctor.
I would like to ask if it is acceptable to insert a contraceptive IUD on the sixth day of my menstrual period.
The instructions state that it should be inserted within 2 to 5 days.
If it is possible to insert it on the sixth day, can I engage in unprotected intercourse only seven days after the insertion?

Ting, 20~29 year old female. Ask Date: 2023/07/02

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, generally on the fifth or sixth day, there should still be contraceptive effectiveness.
Wishing you good health.

Reply Date: 2023/07/02

More Info


Inserting an intrauterine device (IUD), commonly referred to as a contraceptive device, is a significant decision that requires careful consideration of timing, especially in relation to your menstrual cycle. The general recommendation for IUD insertion is to do so during the first five days of your menstrual period. This timing is suggested because it coincides with the time when the cervix is slightly more open, making the insertion easier and potentially less uncomfortable. Additionally, inserting the IUD during this time can help ensure that you are not pregnant, as the likelihood of conception is lower during menstruation.

To address your question directly: while the ideal time for IUD insertion is indeed between days one and five of your menstrual cycle, it is generally acceptable to insert the IUD on day six. However, it is important to note that doing so may slightly increase the risk of pregnancy if you have unprotected intercourse shortly after insertion. The reason for this is that the IUD may not provide immediate contraceptive protection if inserted outside the recommended window, particularly if you have a shorter menstrual cycle or if ovulation occurs soon after.

Regarding your concern about engaging in unprotected intercourse after the IUD is inserted, it is typically advised to wait at least seven days after insertion before considering the IUD fully effective. This precaution is particularly important for first-time users, as the body may take some time to adjust to the device, and the IUD may not provide immediate protection against pregnancy during this initial period.

If you are considering inserting the IUD on day six of your period, it is advisable to consult with your healthcare provider. They can provide personalized guidance based on your specific health history, menstrual cycle, and any other factors that may influence the effectiveness of the IUD. Additionally, if you have irregular menstrual cycles or conditions such as polycystic ovary syndrome (PCOS), your healthcare provider may recommend alternative contraceptive methods or additional precautions to ensure effective pregnancy prevention.

In summary, while it is possible to insert an IUD on day six of your period, it is best practice to follow the guidelines of inserting it during the first five days. If you do choose to insert it on day six, be aware of the potential risks and consider using backup contraception for at least seven days following insertion to ensure maximum effectiveness. Always consult with your healthcare provider for tailored advice and to address any concerns you may have regarding your reproductive health and contraceptive options.

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I would like to know if inserting a contraceptive device on the fifth day after menstruation (with ovulation test confirming that day is ovulation day) is still effective for unprotected intercourse after seven days?


Dr. Lin Manying reply Obstetrics and Gynecology
Hello: It is recommended to use condoms as a safer option. Hualien Hospital, Ministry of Health and Welfare, cares about your health.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Start using it from the fifth day of your menstrual cycle, regardless of whether your period has completely ended. Wishing you good health.

[Read More] Can You Insert an IUD During Your Period? What You Need to Know


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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the probability should be low. Wishing you good health.

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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the contraceptive device should be used starting from the fifth day of your menstrual period to be effective. If used later, it may not provide contraceptive protection and will only have the effect of delaying menstruation. Wishing you good health.

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