Jewel and Ty Murray, who were married in 2008, are now having a baby!

The couple have been trying for almost two years, so this news comes as a great blessing. "I have always been a workaholic, so I had to learn how to slow down and take care of myself in a different way," Jewel, now in her second trimester, tells PEOPLE.

The singer, 36, found out she was pregnant on her first day filming as co-host of Bravo's upcoming reality show 'Going Platinum,' a music competition series that spotlights aspiring songwriters. Former 'American Idol' judge Kara DioGuardi will be hosting alongside Jewel.

"It was so hard to keep it a secret," she adds. "I was worried I'd start throwing up on set [of 'Going Platinum'] and everyone would be like, 'Oh, she's pregnant.' "

The couple are currently remodeling their 2,200-acre Texas home and converting the former guest room into a nursery. "I'm trying to be in the moment and really enjoy my pregnancy," Jewel says.

Jewel released her seventh studio album, 'Sweet and Wild,' last summer, which spawned the singles 'Stay Here Forever,' 'Satisfied' and 'Ten.'