Mom-to-Be Britney Cans Her Nanny

The singer made the decision to get rid of little Sean Preston's keeper in the wake of the child falling from his highchair, according to In Touch Weekly.

Britney has been "hiding out and depressed" since her son's head-bonking incident and cancelled plans to celebrate her brother Bryan's birthday, the mag reports. "She wanted to be a mother and thought she could snap her fingers and be the perfect mom," a pal told the mag. "But Britney is learning the hard way that being a good mother is something you always have to work at."

Britney also reportedly hired a doctor to advise her on how to keep her tot safe. "The doctor advised her not to leave Preston on any high surfaces where he could roll off," according to an insider, which also reports that Spears was so impressed with the sage advice that she wanted to hire the doctor full time, but he told her that it wasn't necessary.

But apparently, childcare is putting additional pressure on Spears' marriage to her aspiring rapper hubby, Kevin Federline. The two got into a spat over whether to go to his hip hop show at the Las Vegas club Pure last week. "Kevin wanted Britney to stay out that night, but she refused," an insider told the mag. "She wanted to stay at the hotel with the baby because she felt uncomfortable leaving him with the nanny." So Brit spent the night in her hotel room while Kevin partied .