Today, upon first insertion, I got a great seal, no leaks and everything was grand. Then I started getting killer cramps, much owrse than I have gotten in over 6 months. Could this have anything to do with returning to using the Diva after being off it for so long? Also, I am not sure yet, but when I put it in the second time, I don't think I got a seal. It is open, but I think it is leaking. Why does this keep happening?