is Bones pregente with booth's baby girl?

I guess the complete obviousness of it (they mention it constantly every episode) wasn't obvious enough for you...anyway most definitely yes.

Defidently. I mean seriously, Bones actually told Booth he was the father in the season finale.

Yeah I think so it seems that way in the season but I could be wrong. LOL

yes, in season 7, episode 7 "The Prisoner in the Pipe"
Brennan gives birth to a beautiful baby girl whom she and Booth name Christine Angela Booth after Brennan's mother and her best friend/ Christine's godmother, Angela Montenegro. She got pregnant in season 6 episode 22 "The Hole in the Heart" when Booth was comforting her after the tragic shooting death of her Favorit intern Vincent Nigel Murray at the hands of former Gulf War sniper trainer turned serial killer,Jacob Broadsky. And they end up getting married in season 9 episode 6 "The Woman in White"