If you’ve experienced pain with a cup before, it could very well be because you have a high cervix. During the day, reusable cups ride up due to muscle contractions and physical movement. This can cause the cup to travel up too high, sending your body into fight-or-flight mode. “You know it can’t be lost, but your body doesn’t have logic the same way your mind does—so it tenses up,” Rosas says. This is why choosing the right size for your body is so important. “It’s good to know what you’re getting into before you waste money or before you get into one of those really fearful experiences,” Rosas says.Â