A menstrual disc is a flexible, ring-shaped product designed to be worn internally to collect menstrual fluid instead of absorbing it. This device is placed high in the vaginal fornix, the wide space at the end of the vaginal canal, just beneath the cervix. The rim of the disc is secured behind the pubic bone to hold it in place. You can urinate while wearing a menstrual disc because the urinary and reproductive systems have distinct and separate pathways.
The Anatomical Reason You Can Urinate
The ability to urinate normally with a menstrual disc in place is entirely anatomical, stemming from the fact that the urethra, where urine exits the body, is a separate structure from the vagina. The female body has three external openings: the urethra, the vagina, and the anus, each serving a distinct purpose. The urethra is located superiorly and anteriorly to the vaginal opening.
The menstrual disc is inserted deep into the vaginal canal, resting in the fornix and held by the pubic bone. This placement means the disc collects fluid from the cervix within the vagina. Crucially, the disc does not occupy or obstruct the urethra, the tube connecting the bladder to the outside.
When you urinate, the bladder empties through the urethra, a process that occurs well outside the area where the disc is positioned. The disc’s function is centered on the reproductive tract, which is distinct from the urinary tract. Therefore, the presence of the disc does not interfere with the natural flow of urine.
Understanding Potential Shifting During Bowel Movements
While urination is unaffected, bowel movements (defecation) introduce a different dynamic that can interact with the disc’s placement. Defecation involves engaging and contracting the pelvic floor muscles to bear down and expel waste from the rectum and anal canal, which sits posterior to the vagina. This muscular exertion creates internal pressure in the pelvic region.
This increase in intra-abdominal pressure can cause the disc to shift slightly out of its secure position tucked behind the pubic bone. When the disc moves momentarily, it may allow some of the collected menstrual fluid to be released into the toilet, a phenomenon commonly called “auto-dumping.” This is not a malfunction of the product but rather a normal physical interaction with the pelvic muscles.
Once the muscular pressure is released, the disc often returns to its correct position on its own, tucking back behind the pubic bone. Auto-dumping is a feature some users appreciate, as it can extend the time before the disc needs to be manually removed and emptied. The degree to which this occurs depends on individual anatomy, pelvic floor strength, and the specific disc size and flexibility.
Practical Tips for Restroom Use
The primary concern when using the restroom is managing the potential for auto-dumping, particularly after a bowel movement. If auto-dumping occurs, it is wise to confirm the disc has resettled properly to prevent unexpected leaks later. A simple, clean finger check can ensure the front rim of the disc is securely tucked behind the pubic bone once you are finished.
For those who find the disc has shifted slightly, a gentle pelvic muscle contraction can sometimes help reposition it. Prioritizing hand hygiene is necessary before and after any interaction with the disc. Always wash your hands thoroughly before reaching inside to ensure a clean environment.
If you find that your disc consistently shifts or leaks significantly during restroom use, it may indicate a fit issue. You might consider trying a different size or a disc with a firmer rim. The use of a menstrual disc allows for normal urinary function and requires only minor adjustments to your routine to manage the interaction with bowel movements.