Jennifer Aniston trying for baby!

If sources are to be believed, actress Jennifer Aniston has been trying to conceive a child for more than a year.

The 44-year-old, who is engaged to actor Justin Theroux, initially used to laugh off pregnancy rumours, but apparently Aniston is now sick of such reports, reports showbizspy.com.

"It's starting to be a source of irritation for Jen," said a source.

"Jen purposely left her work slate clean for the next few months to prepare for motherhood. She puts a brave face on the rumours, but it masks her desperate desire to be a mother," the source added.