How do I say it?

I’m 19 and Pregnant, I recently just moved home to my family but that’s not my problem. The father was a fling, he was staying in my town working for a company based out of Jacksonville. He has since gone home but not before we had 3 weeks full of unprotected sex. We still talk on the phone and I plan to go see him when I get the time, so I guess you could say we are still seeing each other. My problem is how to tell him, if he didn’t want it why would he risk it all those times, and another funny thing to me was that he was always talking about kids how he couldnt wait to have one, this all confuses me. I don’t know how to take it all, I’m thinking that he’s waiting for me to tell him cause I kind of think he planned it. But at the same time I’m scared to death that he’ll just blow it off and my child will grow up like I grew up, without a father, I don’t want that. I keep telling him I have something importatnt to talk to him about but When he asked about it I just blow it off, I don’t know how to do this. I can’t do it by myself…….. :S 🙁