I need advice about this relationship situation?

Hello, here’s what happened..
Last friday I was having dinner with my boyfriend, we were also drinking, and I was experiencing the most awful headache ever, the kind you get with nausea and everything, so he asked what the hell was wrong with me, I told him I was getting the flu or something.. and he asked me if I could be pregnant.. I told him of course not (Im not).. but then I said ” If I were pregnant I would definately keep the baby” the thing is, he went berserk about it, said every kind of awful word there is ( not to me directly , but to the situation), said he had a whole future ahead, and that something like that just couldnt happen.. The thing is I told him to please calm down, and then I just didnt’t wanted to talk about it anymore so I took a taxi and just went home.
Of course I couldn’t sleep at all, because I just kept thinking about the way he reacted and about the fact that he made a personal issue out of it ( he freaking forgot that if it was the case I would be having the baby not him), so.. now, Im still very sad, because, I realized that perhaps this relationship it’s just not what I thought it was.. (we’ve been together for 2 years)

now.. is this a normal guy reaction and Im just being paranoid??.. I must say that next day he apologized for being such an ass..
or he showed his true colors???