Wow, my name came up a few times here!
Well, I just want to report that I've been practicing what I've been preaching... met a guy in mid-April, and he took me to a ring store in mid-November. No, I don't have the ring yet, but he asked me what kind of stone I liked and what type of setting.
With Christmas, New Year's and Valentine's Day coming up, he now has a few opportunities in which to present me with a very nice gift.
We've also been discussing cities where we'd like to live, types of homes, etc. Again, this is just past the seven-month mark. We are in our 30s, so that makes a difference, but he said he knows that he couldn't even discuss me moving to be with him -- let alone having children with him -- unless he puts a ring on my finger. I told him as well that a year is my time limit, give or take a few months... not like I would leave exactly a year to the day of our first date if there's no ring, but my personal deadline is the end of next spring.
Anyway, it tells me quite a bit about your SO, Bliss806, that he has not made moves to marry you after three years, living together and most importantly, after you've created a child together.
You need to make some tough decisions right now as to what you're going to do, and if you want to be married and he won't budge, you have to be strong enough to move on. At 25-26, 3 years is enough time for him to make a move, and with the fact that you became pregnant, that should have made him make that move a while ago.