Anyone with advice in how to get the flex discs in correctly and not leak? I've pushed it down and back as far and I can get it then I push the front to make sure it's behind my pubic bone and it always leaks and seems to move out from behind it.

I am very sensitive to feminine products and these are comfortable for me so I really want them to work. I've tried one period cup and didn't like the feel of it, I could feel the tail of it no matter how hard I tried to get it in there right. I've tried multiple types of tampons and ever since my first son was born they make me itch and I hate pads but that is all that's working for me right now.