Will I get in trouble if I quit my job?

I'v only been working there a few months & already I've become suspected of stealing because my register keeps repeatedly coming up short. I'm afraid that if i don't quit they'll eventually fire me because no matter how careful I am the same thing keeps happening & I have no idea why. I'm also afraid that if I quit now it'll make me look guilty, but I know it's probably unwise for me to stay. I don't know if I'll get into some kind of trouble legally for leaving or what, but I have to do SOMEthing. Plus i really don't like it there because it's been a lot of pressure to not make mistakes & I don't wanna deal with it anymore.