Pregnant with a spaniards baby?

i just found out i'm pregnant! and the father lives in spain (I live in the US) I visit spain frequantly, i have family here and a house. I am currently here for two months and I have not told him. I have been seeing this guy for a little while, hes a good guy, I'm just worried about how this is going to work. I can't live here, and I don't know how to tell him. Any advice on any of these issues? I'm terrified