Feeling vulnerable

Hey this isn't a gripe about being pregnant, not at all, being pregnant is so fantastic so overwhelming every woman should have an experience of it.
This is a gripe about how I feel so totally and utterly vulnerable ,being solely responsible for this life growing iside of me.
Im petrified that someone will attck my children and I wont be able to defend them because I am entirely responsible for this being inside me, that if I retaliated the child inside me may get hurt.

Im scared that a pupil at school will push me into a desk and the fright is not that I would be hurt but that my baby inside me seeking solace in my womb would be hurt ,just because it hapens to be me that someone has directed their anger at.
I feel helpless , I feel vulnerable ,like I need barbed wire wrapped around my stomach.
Mad isn't it???
yet I know that deep down if someone did attack my children I would fight tooth and nail for them (which is a scarier thought because then that would be my total disregard for being pregnant that would be instinctual that could end up in my baby being damaged).

ohhhhh god did i say that being pregnant makes you paranoid also?