Accidentally got fiancé pregnant. Advice needed.

Hello guys! So I am a 27 year old guy and I have been with my fiance [25F] for around 3 years now. We've always wanted kids but we decided that we would have them in our early 30's after we were already married for a couple of years.

Long story short, I was about to get some action a couple weeks ago when we realized we had run out of condoms. And like a tale as old as time I was too horny to stop so I convinced her I would just pull out and well...she is pregnant now.

My girl doesn't want to get an abortion, which I completely respect. I know this predicament is my fault as I was the one thinking with my dick, but any advice/words of wisdom would be appreciated. I have always wanted a kid but this is way earlier than I was expecting or am ready for and this is the most terrifying feeling I have ever experienced.