Apparently the news that Beyonce is pregnant is only worth a side cover photo when speculating that Reese Witherspoon is about to be engaged, which leads me to believe that US Weekly is not 100% sure that Beyonce is actually pregnant. In the article, a source says that Beyonce wanted to finish an album and go on a world tour but can't now that she is pregnant. I don't see why she could not do those things if she wants to. Sure, she might not be able to dance as much as she normally would, but I know a lot of women who work all the way until the day they give birth.
Also, Beyonce is supposedly still in her first trimester so I doubt she is sharing the news to very many people and I doubt that any of those would probably go running to US as soon as they heard the news. Beyonce may very well be pregnant, but I still think the story is wrong. They used a really old quote from Solange about how Beyonce would be a great mom, but they make it seem like Solange is confirming the pregnancy which she did not.