If this cycle didn't take, we were either going to have to have me go through a surgery to close my tubes off lower than they already are, or go with a surrogate. There are two types of surrogates. The cheaper was is a traditional surrogacy, where the surrogate's eggs are used and she is artificially inseminated with the father's sperm. AVOID THIS TYPE!! The surrogate has the right change her mind after birth, and keep custody, and the father has to pay child support. It's fucked up beyond belief, but it happens. As medicine and law see it, she is a biological parent, and as the law sees it, you can't take custody away from a biological mother unless she's shown to be unfit (fathers are a different story). And so, as she has custody, you and your husband will be paying for a child you waited to raise, and now get every other weekend, if she cooperates. What's more, you pay her to carry the child she has the legal right to keep. This type of surrogacy should be outlawed.
The more expensive route where you are guaranteed to get the baby is a gestational surrogate. Either your eggs or donor eggs are fertilized in a lab, everything the same so far as IVF. Only rather than transferring them into you, they are transferred to a third party. The gestational carrier can not decide she wants custody and get it.
It is completely legal here in the states to publicly search for a surrogate. Surrogate Moms Online is one such site.
The first step though after deciding to do this will be to find the surrogate. Your cycles will be synced. You'll go through the beginning of IVF, the shots and all, then the retrieval and fertilization. You'll both have had HCG shots to trigger ovulation at the same time. Then the embryos will be transferred to her.
Your reproductive endocrinologist should be able to help you get started.