There are three main reasons for menstrual cup leakage: Your cup may not have popped open all the way during insertion, it may be inserted too high or too low, or it may be the wrong size.
To check that your Flex Cup has fully popped open once inserted, run a finger all the way around the base of the cup. If you can feel any dimpling or folding, you may need to remove your cup and reinsert (we recommend the punch-down fold for beginners).
Next, make sure your cup isn’t inserted too high up in the vaginal canal: For a comfortable fit and a complete seal, it may only need to be inserted about one knuckle deep. If neither of these adjustments help, get in touch with our Flexperts for personalized advice!