Accrah, welcome to the forum!
First, may I just reply to the last sentence in your post by an emphatic "no, no, no." Of course you should NOT think that you need to divorce your spouse because you do not have children. I am sure any Orthodox priest would say that not having children is not a reason to look for divorce and/or another marriage. When children are born in marriage, that's great, wonderful, a true blessing; but the primary reason for getting married is not to procreate. Marriage is one of the forms of theosis, it's, essentially, about you and your spouse helping each other in your and your spouse's salvation. The question of having or not having children is, actually, very secondary. (Fathers, - please correct me if I am misrepresenting the Orthodox view on marriage here!)
Second, I can relate to your feeling of some discomfort being a Christian adult and a spouse without child(ren). Indeed, my wife and I sometimes feel strange, awkward, because whenever they talk about "family" here in the US (in the "world" as well as in Church), they usually imply the traditional nuclear family of mom, dad, and *several* kids. We never perceived "family" this way. We both grew up in extended families (with grandparents, uncles, aunts, cousins, second and third cousins, etc.), and we both are NOT used to families where mom and dad have several kids; my wife has only one sister, and I am the only child of my parents (and they both were the only children of their parents). While we both love children and admire parents who beget and take care of several children, we both sometimes feel somewhat "discriminated against" in that we have only one daughter, who is now 23 and out of the nest. We sometimes feel that when people talk and write about "families" - look, even here there is a "family" forum, - it's NOT about us; we, two adults living without our child, aren't a "family," we are something different...
Those are very minor "issues" though. I think it's just old traditions, nothing really characteristic of, or intrinsic to, Orthodox Christianity. Do not feel bad about yourself and your family. You ARE a family regardless of you and your spouse having or not having children, and you should be absolutely welcome and cherished in any Orthodox parish!