Why is my cup constantly leaking?

I used it last month and it worked fine, no leaks.

This time, I just put it in and I’m already leaking. I checked to make sure the cup had fully unfolded inside me and it’s not full cause I just put it in so why am I still leaking after 1 minutes??? What am I doing wrong this time??? Pls help

Edit: ty for the responses, it was just a heavy flow and I was super frustrated that day cause you know, hormones. But literally the next day the cup worked perfectly and it’s literally my fav thing ever!!