billyd,
The website that Lazerlike listed should give you some help, and there’s probably contact information there so you can talk to someone.
I am so sorry that you were given bad advice: what your priest told you is contrary to Church teaching, so no wonder you’re confused. But, you didn’t know the ramifications of what you were doing, and you got crappy advice from someone who should have told you the truth. So, don’t beat yourself up over this: what’s done is done, and you weren’t deliberately trying to do the wrong thing. The important thing is to now move forward in an ethical manner. And you might want to discuss this matter with your priest, and hopefully get him to stop giving out this erroneous and morally reprehensible “advice”. If he doesn’t listen, by all means let your bishop know about the situation.
As for reversing the tubal ligation: you are not absolutely required by the Church to do so, though it can be and often is a meritorious act. This one is up to you. You might feel better about making a decision after you have spoken with someone who is relaible in this area, perhaps at the bioethics center that’s been mentioned, or, at the very least, after talking to a priest who is not dissenting from the Church. Where do you live? Perhaps, if we know your location, someone might be able to suggest a solid priest in your neck of the woods.
By the way, a respected theologian (whose name I’m forgetting right now!) pointed out that the term “fertilized egg” is misleading—once an egg is fertilized, it becomes a developing human life.