I cutted the stem off, and it started doing that hahaha
Thankfully it only happens when I'am putting in, so I can fix it.
Don't know if it is something about the fold [I can only do the triangle, I'm a virgin and no other fold can go thru my hymen opening without hurting] or if it's because of its wide [40mm]
I kind off afraid it happens during the use.
That have not happend when the stem was there, but I just had to cut it, it pokes me and it was so outside of me that very often I even moved the cup when I sat, making it breaks its seal and leaks.