I don't know about this diva cup. I can't seem to get it in far enough. The tip is pretty much at the surface of things. That doesn't feel so good when I'm sitting down. It's like I'm pushing it out. It feels like it's almost in far enough when I put it in, but then it slips down just a bit. Ugh. I'm at work and going in the bathroom to reposition the thing is -- at the very least -- interesting. Any advice?