Actress Christina Applegate is pregnant with her first child, People.com reported Wednesday.

The star of "Samantha Who?" was engaged on Valentine's Day to Dutch bass player Martyn Lenoble, 41. The couple has not yet set a date for their wedding.

Applegate, 38, was diagnosed two years ago with breast cancer and was public about her decision to have a double mastectomy to prevent the return of the disease.

Of her relationship with Lenoble, Applegate told People.com he has been her "rock" for the last two years.

"He gave me something to really want to live for and something to smile about," she said.