TMI!TOUCHY SUBJECT LADIES & FTM

i am so loosing my head over the thought of having to get my lady parts out in labour ( i know i wont care when im in labour ) but i just cant get out of my head where will my water break... will it just come on instantly and i start screaming etc etc lol! but the worst is ive a quite a large labia and the thought of them flapping wide open makes me feel ill( i feel so ashamed/embarrased of them it controls my life/sex life ) i just need some reasurrane ladies !