I recently started using the Diva Cup, with no success. I cannot seem to get it inserted high enough. I can insert it and rotate it, but it still "pokes out" a bit. I have had a little leakage, which leads me to believe I haven't gotten it in right. I've read a bunch of posts that talk about how much work it is to remove, but I can just "pop" it out with a light tug on the stem. I'm wondering if maybe I should use the smaller size? Has anyone else had these problems? I really, really want this to work!