Gymnast answere this please ?

I alwaya make sure before I tumble or anything to pee cause when I tumble and it's more aovon front tumbling when I punc of the floor and in mid air some pee comes out and I can't control it and it's very frustrating and this so happens on vault when I punch the board and like it's not a full out pee either just a little everytime u can't notice but it's unconfrotable please help