I've been using a small Diva cup for about five periods, and I really like it, but I think it might be too long. I haven't had any random leaks, but my cervix is taking up some room in the cup so it doesn't fill up completely before it overflows. I've been considering getting a lunette, but I'm not sure if I should get a large or small. I have a really heavy flow so I'd like to get one with a larger capacity, but I haven't had kids and I'm 16, so I'm nowhere near the age most cup companies say to get a larger size. I'm also not sure if the large will be significantly better than my Diva, because the difference in length is only 5 mm. What do you guys think?