Shania Twain Is Not Struggling with Infertility

04/07/2011 at 12:10 PM EDT

Shania Twain has lots of good things happening in her life right now.

The country superstar is a newlywed and is readying her latest venture, the documentary series Why Not? With Shania Twain, for May 8.

But contrary to multiple online reports, the singer is not privately struggling with infertility. "This is absolutely not true," her spokesperson tells PEOPLE.

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Twain, 45, who has one son Eja, 9, wed Frédéric Thiébaud on Jan. 1 at sunset in Puerto Rico, surrounded by close family and friends. "I'm feeling refreshed and optimistic about the future," she wrote a month before the wedding. "I'm looking forward to what the new year has in store."

Twain's TV show, which will premiere on Oprah's OWN Network, will follow her as she shares her personal story after the breakup of her marriage to Robert "Mutt" Lange.