S/O has baby fever?

I've been having some major baby fever the last couple months especially after me and my boyfriend bought a house. We've discussed marriage and kids and decided it is best to wait mainly until we get established with our careers. (Just moved to a new state last December) he's in a program that pays very well and when he finishes in 3 years he'll be making more than double what he's making now. Yesterday he randomly brought up that in the near future I'll be getting a ring. And today after he came home from work asked if I wanted to have a baby. I asked him what happened to waiting and he said he knows it's the smart thing to do but wouldn't mind having one now. (Can never tell when he's serious cause he likes to joke around) since he's been home he's been making random pregnant comments like "you're glowing" and what not. Weird thing is, is that I actually bought a pregnancy test today because I've been feeling very weird kinda getting symptoms. We agreed last week that if I were to ever be pregnant unexpectedly, we'd keep the baby. I just think it's odd he came home talking about having a baby and making a bunch of pregnancy comments. Trying to figure out if he was being serious. I feel like he is but he's just nervous.