Pregnancy rumors are nothing new for tabloid queen Jennifer Aniston, but ever since she got engaged to actor and writer Justin Theroux this summer, the rumors have kicked into overdrive.

Theroux popped the question in August, and since then there have been constant reports and speculation that Aniston is either pregnant or hoping to get pregnant as soon as possible.

The latest report comes from an insider close to Aniston and Theroux who claims that while both of them want a baby soon, Anison is much more dedicated to making it happen quickly, and the 43-year-old has been pressuring her 41-year-old fiance that they should begin a family now.

"The feeling among some of his friends is that Jen's trying to pressure him into starting a family," the source said. "He's said he wants to take it slow, but there's no way Jen will go for that. She's upset they're not on the same page."

Another recent report came from Star Magazine, which claimed Aniston was pregnant and over the moon about it, but the couple was keeping quiet because they didn't want any bad luck early on in Aniston's pregnancy.

But Us Weekly did some fact-checking on the report and reached out to a spokesperson for Aniston, who said the story about a pregnancy was totally false.

"It's just another fabrication," her rep said. "She was just at LACMA and she certainly does not look pregnant. When has Star ever been right?"

Aniston certainly showed no signs of a baby bump when she attended an art gala at the Los Angeles County Museum of Art and wore a revealing Tom Ford gown with a plunging neckline. CLICK HERE to check out photos of Aniston showing off her body at the 2012 Art + Film event.

Although Aniston isn't pregnant yet, friends of the actress have said that she is definitely ready to get pregnant, even if it happens before her wedding to Theroux.

"In truth, she'll be overjoyed whenever it happens; if that means she has to walk down the aisle with a baby bump and do her toasts with apple cider, then so be it," an insider said.

Tags: Jennifer Aniston Justin Theroux