Re: tubal reversal
The procedure to "undo" the tubes is called a "tubal reversal." It is not covered by insurance (it's not a medical necessity by any definition) and requires specialized training to perform. In many instances, when given the statistics of successful pregnancy and the time required for recovery, couples now opt for In Vitro Fertilization. The best course of action is to consult with a fertility specialist and decide from there.
One additional note: this kind of dilemma is one reason we don't "tie tubes" without educating a woman about all of her choices in advance.