Your welcome.
So you do not want anymore children, right? And you have had a tubal ligation, right? Well, I am not a doctor, but I do not beleive that you can get pregnant without having a reversal done. So if what you are worried about is accidentally conceiving, than if your tubes were cut and burned the correct way, than you have nothing to worry about. It is not physically possible. Although, if they weren't burned, (just tied), than it is still a possibility that you may become pregnant.
Don't worry, be happy!
Marissa