I'd encourage you to read the book "Hope Deferred." It's a collection of stories from women like yourself, offered in a theological context.
You might also appreciate these insights from Dr Lisa Cahill:
>I suggest that the movement from procreative acts to personal relationship [as the central aspect] in the Roman Catholic teaching about the nature of marriage represents a "paradigm shift" which is still incompletely reflected in Catholic sexual ethics. The first feature of the emerging paradigm is that the partnership of the couple is the basic category; the partnership opens out onto family and society.
>...Once the shift is recognized, then acts must be evaluated in the context of the marital relationship. For instance, acts of procreation which rely on a procreative partner outside the marriage are morally questionable because they seem to make the desire to procreate more important than the fundamental marital partnership, and bring a third party (via shared parenthood) into the nexus of basic human relationships which marriage is supposed to support and protect.
Now, Cahill goes on to argue that techniques of artificial conception support that exclude the sexual act can be justified -- since "marriage isn't all about sex" -- which is, y'know...a stance that you might not want to accept at face value. But I think her insights above are pretty accurate.