the Continuous Effectiveness of IUDs in Contraception - Obstetrics and Gynecology

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The effectiveness of intrauterine devices (IUDs) as a form of contraception is well-established, and when used correctly, they provide continuous protection against pregnancy. IUDs can be either hormonal or copper-based, and both types are designed to prevent fertilization and implantation of an embryo.

When you have an IUD inserted, it begins to work immediately if inserted during your menstrual period. If inserted at other times, it may take a few days for it to become fully effective. In your case, since you had the IUD placed on February 26 and removed it three weeks later on March 19, it is important to understand how the timing of insertion and removal affects its contraceptive efficacy.

After removing the IUD, there is typically a brief period during which you may not have contraceptive protection. This is because the hormonal or physical effects of the IUD cease once it is removed. If you then wait a week before inserting a new IUD on March 26, it is crucial to note that the new IUD may not provide immediate protection. Generally, it is recommended to use an additional form of contraception, such as condoms, for at least the first seven days after inserting a new IUD to ensure that you are fully protected against pregnancy.

Regarding your specific question about having unprotected intercourse on March 28, it would be considered safe only if the new IUD was inserted correctly and had been in place for at least seven days. If you inserted the IUD on March 26 and had sex on March 28, you would not have full contraceptive protection yet, and there is a risk of pregnancy.

As for the question about whether there is any contraceptive effect during the week when the IUD is removed, the answer is no. Once the IUD is taken out, you lose the contraceptive benefits it provides. Therefore, during that week, you would need to rely on another form of contraception to prevent pregnancy.

In summary, IUDs are highly effective when used correctly, but timing is crucial. After removal, there is a gap in protection, and new insertion does not guarantee immediate effectiveness. Always consult with your healthcare provider for personalized advice and to clarify any uncertainties regarding your contraceptive methods. If you have any concerns about potential pregnancy or contraceptive effectiveness, it is advisable to take a pregnancy test or consult with a healthcare professional for further guidance.