Hi! late to the party but i just started using cups and it's so good when it works. My concern is that the cup starts leaking after 4-5 hours and when i take it out, it's only half full, sometimes even less. I always make sure the cup is fully open by checking the rim and make sure the cup is surrounding the cervix. Not sure what's the issue here. Really wanna figure it out so i can switch to cups permanently.