Girlfriend is prego.?

okay...heres the scoop? i met a girl on a telephone chat line..we've been talking/texting everyday all day . she lives in san antonio and i live in houston....eh...3 hour drive.. i've been up there 4, 5 times...spent the week end with her and had great times...we really clicked...okay...okay i got her pregnant and now she is not wanting to talk to me as much....she said she wants her space..we havent talked on the phone for 3 days...only texted...everybody in her side of her family knows. everybody inmy family know...except my mother.....shes 29 and im going to be 35. is the reason shes acting like this pure harmonal? theres no more i love you's anymore....sup with that? advice please.