Now that you know the height of your cervix, it’s time to check the cup’s size.
Brands usually offer different sizes; some call them “small, medium & large”, or “1 & 2”, or “a & b”, etc. – I know, it’s confusing! When they refer to size, they talk about the diameter, not the length.
The typical guideline suggests that if you’re under 30 years old and haven’t had a full-term pregnancy, you should pick a smaller size, but if you’re over 30 and/or have had a full-term pregnancy, you should choose a larger one.
While this is helpful, it may not be entirely accurate for you. A small size can be just fine if you know you have a strong pelvic floor despite your age or birth history. And if you’re not sure, go for a larger size! Your vagina has an amazing capacity to stretch – it can easily accommodate a larger cup but can’t shrink to hold a smaller one.