It is unlikely you could get your tubes fixed enabling you to have another baby. Most likely, you would need to go through IVF. Since your ovaries are still there and presumably working, they can harvest the eggs from you, fertilized them, and then put them into your uterus.
You have to find a place that will do a reversal for you, and see if it can even be done. If the damage is too much to your tubes, or they didn't leave enough a reversal wouldn't be possible. You have to keep this in mind when you go to have it done, because a ligation is meant to be a permanent form of birth control, and when it's done is not meant to be reversed. Most places will charge between $3-5,000