Betcha never been asked your cervix height… but this is really important when using a menstrual cup! Knowing your cervix height will help you determine whether you need an UltuCup Mini, Model 1 or Model 2.
How to measure the length of your cervix...
- Find a comfortable position that will allow you to easily reach your cervix. Try sitting on the toilet, putting one leg up on the edge of the bathtub or squatting.
- Make sure to wash your hands with soap and water.
- Insert your index finger into your vagina and slide it upward until you feel your cervix. Your cervix is the shape of a small doughnut and it feels a bit like the tip of your nose.
- Take note of how far your finger goes inside the vagina when you reach the cervix. It is important to consider the ‘knuckle rule’.
The knuckle rule.
If your fingertip can feel your cervix at the first knuckle or first bend in your finger inside your vagina, you have a low cervix. While our UltuCup Mini is meant for a lower cervix, if you find your cervix at the first knuckle point, our UltuCup Mini may be too long to fit your needs. We recommend the UltuCup Mini if your fingertip can reach the cervix between the first knuckle and middle knuckle.
If your fingertip can feel your cervix when your 2nd knuckle is inside your vagina, or roughly half way up your finger, you have a medium or average height cervix. All model sizes are an option depending on age and if you have given birth vaginally or by C-section.
If your fingertip can feel your cervix when more than your 2nd or 3rd knuckle is inside the vagina or can barely reach your cervix, you have a high cervix. We recommend UltuCup Model 1 or Model 2 depending on age and if you have given birth vaginally or by C-section.
Check out our size guide for more information on sizing, or get in touch with any questions! We're happy to help.
Kimberly Langdon, M.D.
Retired Obstetrician / Gynecologist
Our resident gynecologist Dr. Kim Langdon has provided us with the information you need to decide if the UltuCup Mini is the right choice.
Kimberly Langdon M.D. is a retired University-trained obstetrician/gynecologist with 19-years of clinical experience. She delivered over 2000 babies to mothers in a suburban Midwestern community. Beside obstetrics, she specialized in gynecologic diseases such as menstrual disorders, infertility diagnosis and treatment especially pertaining to tubal blockage and polycystic ovarian syndrome (PCOS). Her practice was dedicated to solving complex cases of pelvic pain, menopausal issues, hormone replacement therapies-including natural or bioidentical hormones.
How do I know if the UltuCup Mini is right for me?
Interested in trying the UltuCup Mini? The UltuCup Mini is designed for individuals with a lower cervix or those who feel that Model 1 is too long. UltuCup Mini has the same rim diameter as the Model 1, but is shorter in height.
According to Dr. Kim, to determine your cup size, you first need to measure the length of your vagina. It’s important to know that the average length of the vaginal canal is between 3-4 inches.
The cervix is attached to the uterus and does not move closer to the opening of the vagina unless you have a specific medical condition or uterine prolapse from childbirth. It is important to note that while it is not common for the cervix to lower, the vaginal canal can lengthen and shorten during menstruation.
In the case of uterine prolapse, the ligaments holding the uterus in place weaken and stretch allowing the uterus to droop or hang lower in the vagina.
The UltuCup Mini can be an option if you have a prolapsed uterus or if you were born with a slightly shorter vagina, but we recommend taking the steps provided above to first measure the length of your vaginal canal before purchase.
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