I NEED SOME ADVICE!!!

I got my tubes tied at 24 after my second child, because of my children's father. I wasn't in a good relationship with him, and it was more of a "you better do what I say" relationship. I was finally able to leave him and now 5 years later I found the love of my live and we want to have more children. I haven't gotten my period since the end of July and every test I take says negative. Does anyone know the chances of being able to get pregnant after getting your tubes tied? I read the younger you are when it was done and the longer you have had it done increases the chance of getting pregnant. Does anyone know if that is true?