Beyonce Knowles is pregnant with her first child. According to Us Weekly, at least, and while we've heard this before - and it's been wrong before - the magazine seems sure about it ... whatever that's worth. No one was more stunned than Beyonce herself, apparently: "B was shocked. She loves kids, but she wasn't ready to be a mother just yet," says a source. Congratulations, we think, to Jay-Z and Beyonce! "She really wanted to get her album done and tour again," adds the source, but she realizes, of course, that "this is a gift from God and she's so happy." "Jay has been all about family since I met him, and he's always going to be," record...