So wrong and stupid, I almost can't put it into words. First of all, he's in a relationship WITH SOMEONE ELSE. Second, he thinks you're ON BIRTH CONTROL. Deception is not exactly the best terms on which to bring a baby into the world. And last, I have about a decade on you, and just had my first child. While I adore and love him, believe me when I say that I sorely miss the days when I could just leave work and go to happy hour, or even more simple, just going out to a nice dinner. Please, please, please enjoy your college experience first, or you'll regret it later....And then find someone who is willing to be in a relationship with YOU. And then someday, when you are really ready (which entails understanding the difference between simply wanting a baby and what having a baby actually means) have a baby.
For now, get a fish and see how you do with that. If you can handle it, graduate to a dog or cat. Save the baby for later when you have grown up.