I bought a keeper mooncup and have been able to insert it. The problem is that it creates such a strong suction that removing it is nearly impossible. Even squeezing the base or trying to put a finger in the top of the cup doesn't seem to work. Is it possible that I am inserting it too far up? I saw a post here that said they only insert the rim and then push the cup the rest of the way up. I have been inserting the whole cup but leaving the stem out. Is that too far? I am also considering trying another brand, one that would have suction that isn't so strong and I'm open to comparisons. I'm thinking about perhaps a divacup. But my main question is: am I inserting the cup too far and that is why I'm having removal problems?