history: My wife told me she had a surprise for me the other day.  Turns out she was pregnant, and we weren't reallllyy trying My wife told me she had some news for me the other day_comma_ she wanted to tell me she was pregnant. Thats awesome news congrats! 
current: Yeah we weren't reallllyyy trying, so it definitely wasn't expected, but still good news!
next: even better honestly then you didnt have to deal with the stress of trying and it just came natural! 