You have described your situation very well and seem to have processed it for the better. I have realized that life and it's opportunities have the element of timing and if the timing is not right, you can't look back with regret. It's out of your control. Look back on what you were able to experience and let that experience help guide you in the future.

As for being in your 30's, I thought the same thing. I got married at age 38 and almost exactly a year later our son was born. Neither of us had been married before or had children, and had thought that was not going to happen. Life can change quickly, especially when you look back. I had given up on children and even wondered about marriage.