Pregnant Christina Aguilera was crippled with fears for her unborn child during her world tour earlier this year (07) - she wore a carefully-hidden heart monitor in case of emergency. The pop star admits she was terrified when she found out she was pregnant during the seven-month Back To Basics tour, which ended in May (07), and would have quit if doctors hadn't come up with an ingenious way of reducing the risks. She says, "I was paranoid. There are so many things that could go wrong - somebody could slip, somebody could fall, I could fall. There was no way in hell I was going to jeopardise my baby for my show. "I didn't want to make the audience uncomfortable, like, 'Pregnant lady onstage! Is she going to be okay?' But I had to announce it to my band and my dancers, because I wanted to make sure they had my back." Aguilera is expecting her first child with husband Jordan Bratman early next year (08).