Wait until you are on your period, because your cervix will be in different positions at different times of your monthly cycle. Also, you may want to measure on a couple of different days of your period, because it may not be exactly the same each day. Gently and slowly insert a clean finger back, not up, into your vagina, past your pelvic bone, some muscles, and a kind of ’empty’ space. Lubricant may be helpful to use for this part. Wander around to find the bit that feels a bit like the tip of a nose. Your cervix is a round nub, with an indentation in the middle. Note how far your finger went before touching your cervix, and measure your finger with a ruler to find out how many centimeters or millimeters back this was. If it’s so far back you can’t find it at all, just estimate a bit longer than your finger. Now what to do with this information! Some brands make cups as small as 4 centimeter (1. 6 in) long or as large as almost 6 centimeter (2. 4 in) long. Your cup will sit below your cervix when in use. If it is low, you will probably find a shorter cup such as Ladycup, Lunette, Fleurcup, or Yuuki more comfortable. If your flow is light, the MeLuna is also a good option – however, if your flow is heavy and you want to use this brand, you may need to choose one of their larger sizes. If you have a low cervix, the cup without the stem should not be too much longer than the distance from your cervix to your vaginal opening (but you have a bit of slack there, because your cervix can be partially in the cup). If it is high, a longer cup such as Divacup, Naturcup, or Shecup would be better so that it will be easy to reach when you want to remove it, but in this case you can comfortably use most cup lengths.
Light/Regular: 6-9ml Super: 9-12ml Super plus: 12-15ml Ultra: 15-18ml
