OHMYGOSSIP — Jennifer Aniston hates the constant rumors that she’s pregnant — because she’s been secretly trying for a baby for more than a year.

Although the actress — who’s engaged to Justin Theroux — initially joked with pals every time there was a fresh rumor that she was expecting, sources say she is now sick of the reports.

“It’s starting to be a source of irritation for Jen,” a source said.

“Jen purposely left her work slate clean for the next few months to prepare for motherhood.

“She puts a brave face on the rumors, but it masks her desperate desire to be a mother.”