An intrauterine device (IUD) is a small, T-shaped contraceptive placed inside the uterus to prevent pregnancy. Concerns about how the device might affect intimacy are common when adopting this method. Because the IUD is positioned entirely within the uterus, it should not be physically felt by either partner during sexual intercourse. However, the fine threads attached to the device extend into the upper part of the vagina, sometimes leading to questions about partner comfort and whether these threads can cause an abrasive sensation.
The Direct Answer: IUD Strings and Partner Sensation
The only part of the device extending into the vagina is a pair of thin, medical-grade plastic threads, commonly called “strings,” which are necessary for placement checks and eventual removal. These strings are typically trimmed to hang about one to two inches past the cervix. When a partner reports a sensation, it is the strings they are feeling, not the solid plastic.
This sensation is usually described as a “poke,” “prickle,” or “tickle,” rather than a deep, painful scratch like a fingernail. Immediately following the insertion procedure, the cut ends of the strings can feel stiffer and more noticeable, which is a common reason for initial partner discomfort. The strings are made of a flexible material, similar to fine fishing line or dental floss, and are intended to rest against the vaginal wall near the cervix. While most partners do not feel the strings at all, a small percentage report an uncomfortable sensation.
Factors Influencing String Discomfort
The most significant factor is the time elapsed since the IUD was inserted, as the strings naturally absorb moisture and body heat. This process causes the strings to soften and become more pliable, often occurring within the first two to four weeks post-insertion. As they soften, the strings tend to curl around the cervix, making them significantly less detectable.
The position of the cervix, which changes during sexual arousal, is another variable that affects string exposure. During heightened arousal, the uterus and cervix naturally pull upward and deeper into the pelvis. This movement can pull the strings further into the vaginal canal or change their angle, making them more or less likely to be contacted during deep penetration.
Furthermore, the initial trimming technique used by the healthcare provider plays a role in partner comfort. Strings cut too short may leave a stiff, abrasive edge that pokes the partner, while those cut too long may be pushed more noticeably during penetration.
Practical Solutions for Partner Comfort
If a partner is experiencing discomfort, allow time for the natural softening process to occur. Waiting approximately three to four weeks post-insertion permits the strings to become flexible and curl up against the cervix. If the sensation persists past this initial adjustment period, consult a healthcare provider. The provider can check the IUD’s position to ensure it is correctly placed and has not partially moved.
A common solution is for a professional to trim the strings slightly shorter. Trimming should only be performed by a healthcare professional, as they use the correct technique to avoid creating a sharp, perpendicular cut that could worsen the problem.
For couples who prefer to manage the issue without medical intervention, experimenting with alternative sexual positions can be helpful. Positions that involve less deep penetration or a different angle may prevent the strings from being pushed against sensitive areas. Finally, ensuring adequate lubrication can significantly reduce friction, which might otherwise exacerbate a prickly sensation caused by the strings.