Jennifer Lopez Thinks She's a Bad Mom?

The pop diva-known to be a bit of a control freak-is learning the hard way that motherhood is an unpredictable game.

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Even though her song says "I'm Real," it seems Jennifer Lopez is trying to be superhuman in the mommy department. A source tells British magazine Closer: "Jennifer wants to be the perfect mother, but she crumbles if any normal little thing goes wrong. If the twins cry, she thinks its because she's a bad mom and crumbles herself."

The problem has gotten so bad, says the source, that Jenny's husband Marc Anthony has had to beg her to stop worrying. "Marc had to sit her down and make her understand she's a good mom and it's normal for babies to cry."

Friends of Jenny are worried that her paranoia is taking a toll on her health. The source adds, "Jen is a total perfectionist. She's treating motherhood the same way she goes about her career--it's all or nothing."

"Marc is concerned that she's not eating properly or sleeping because she's obsessed with looking after the twins," adds the insider. " If she leaves them with her own mother for a couple of hours to have some time off, she beats herself up about it and feels guilty."

We can definitely see J. Lo applying the same military discipline she has in her career and fitness to motherhood, but judging from the pictures we've seen of date nights with her hubby and jet-setting with her kids, we're pretty sure Jenny is doing just fine. Still, it would be nice to catch her in a pair of mom jeans, or at least one of her classic velour sweat suits and a pair of flip flops.