I've been using cups for a little over a year now and some cycles I have no issues and no leakage.

Other cycles I just CANT seem to place the cups right no matter what I do, I have to insert/reinsert a dozen times and they refuse to open properly (even when pushing against tge vaginal wall, squatting after insertion etc.), so I experience leaks.

I don't think it's a skill issue, as I can use cups with no problems on other cycles.

Could there be an anatomical explanation for this?

Also, do some of you experience the cup suctioning but not unfolding?

I'm so sad about this because I really LOVE cups when they work but right now I'm at work with a period leak and so discouraged