Here's the timeline of my marriage:
Met Anastasia in August. She says it was Aug. 27th, 2011. I'd trust her judgement. She says it was a Saturday. All I remember is it was the Greek Festival and we were both volunteering in the temple narthex.
I asked her out after OCF on September 25th - two days after her birthday, the deadline she had set for herself (unbeknownst to me) before which she would not go out with any guy because of focusing on a work-related exam she was studying for.
I asked her to marry me on January 1st, 2012 at midnight. We got married May 26th.
Our first baby (a son!) Athanasius (his middle name, but we call him by it) was born March 18th, 2013. I was married to her and she was pregnant before I'd known her for a year.
Honestly it surprised us both how quickly we moved, and how little we were unsure about moving so quickly. Neither of us are the sort to do that. I spent an hour yesterday researching cloth bags on Amazon to make sure we got the best for our money for cryin' out loud.
We had no valid reason to use contraception in our eyes - she has a very good paying job and I'm a student about to graduate and hopefully ship off to St. Vlad's. We had very strong relational supports in our friends and family around us, and we knew that our lifestyle could be sacrificed in a few areas to support the cost of a kid, and we could get help from others. Having a kid can be very cheap - a midwife home birth for a few thousand dollars, cloth diapers, and breastfeeding severely cuts down how much money a baby vacuums up. We do believe you have to have very serious reasons to use contraception, and even then our options are limited - we refuse to use anything abortificent and I'm allergic to latex.
But we also have a very unusual relationship. We can literally say anything to each other. My wife is very rational and straightforward and hates games. Having been a Psych major I've taken a lot of classes on marriage and family dynamics and learned how to communicate. We had very good pre-marital counseling. If one of us is doing something that annoys the other we say so, and the other takes it as an opportunity to become more caring and less selfish. We've been together a short time but have faced a few very serious issues, and came out more united and together. I'm not going to get into them here but they threatened every plan we had for the future, and we responded by sitting down together, going over our options, choosing one and having a backup. Our son spent the first week of his life in the hospital because he didn't breath at birth and they thought he had a seizure. Our relationship is very strong, even though we haven't been together very long.
I say all of this just to give a practical example of what others have said; It depends on the couple. I wouldn't have minded if Athanasius had come later, but we both went into marriage knowing this wasn't our decision. To both of us, if you're not ready for children you're not ready for marriage. That was us, however, and I can very easily see it being different for others. I will say this: God gave us to each other and will give us our children as He sees fit, and will provide for everything for us, body and soul. He will do the same for every other couple who trust in Him to do so.