The seal isn’t as strong as you may think. The cup creates a soft suction against the walls of the vagina. This allows it to stay in place, but without glue! There is no danger that the cup cannot be removed with a little patience and calm.
Take a few deep breaths and try to relax tense muscles.
To release the seal, pinch the cup’s base with two fingers, or insert a finger alongside the cup and press the ring with your fingertips.
You may hear a subtle sound, and the cup will come out quickly.
Don’t pull down hard on the stem: you could hurt yourself or damage the cup.