The rumor mill was in overdrive last week surrounding Kourtney Kardashian, and on Sunday night's premiere of "Keeping Up With The Kardashians," the eldest sister confirmed she is pregnant with her third child. Congratulations to her and Scott Disick!

"I'm pregnant. It was not a plan," she told her long time boyfriend in a clip for upcoming episodes.

"What? Holy [bleep]!" he responds.

The episode debuts in the second half of "Keeping Up With The Kardashians" ninth season.

A source revealed last week to Us Weekly that "Kourtney wants to have a handful of kids."

The reality star is "only a few months along" and was spotted in New York "looking really pretty with a nice flush to her cheeks," in addition to donning looser fitting attire.

Kourtney and Scott have a four year old son Mason and 23 month old Penelope.

"They don't know the gender yet," an insider revealed to the publication. "They just want the baby to be healthy."

Us also explains the pair have been together for seven years, though they do not appear in a rush to get married.

The eldest Kardashian allegedly "abstained from drinking" during a recent double date with younger sister Khloe and her boyfriend French Montana.

Kim and momager Kris Jenner added fuel to the fire on their twitter accounts leading up to the premiere.

"Kourtney will also be addressing pregnancy rumours this Sunday on our premiere!' the new Mrs. West wrote. "So be sure to tune in! #keepingupwiththeKardashians."

Kourtney and Khloe are currently on Long Island shooting "Kourtney and Khloe Take The Hamptons."

The pregnant star was spotted over the weekend glowing and smiling, opting for a flowy floral top with white shorts. Her and Scott met up with friends for lunch in Sag Harbor, NY.

Can you believe she is pregnant again? Should Kourtney and Scott get married? Let us know your thoughts in the comments section below.