Kourtney Kardashian is reportedly worried about women "throwing themselves" at Scott Disick.

The 35-year-old star is currently pregnant with her and her boyfriend’s third child together. The couple already have son Mason, four, and two-year-old daughter Penelope and are over the moon to be adding to their brood.

Although according to reports, not everything is simple. Scott is said to still be in party mode, while his girlfriend is almost ready to pop, and Kourtney allegedly isn't happy about the prospect of him spending time with other females. It could be occasions such as the 31-year-old living it up in Las Vegas earlier this month which are worrying the mom-to-be.

"Kourtney has all the details of Scott's mobile and his passwords. She's bought a Track My iPhone app, which shows her where he and his phone are," a source told British magazine Closer. "She's furious that he's out partying all the time when she's sitting at home pregnant. She's feeling more conscious about her pregnancy figure and worries she's unattractive - and she doesn't trust the stunning women who throw themselves at him."

The pair previously split in 2010 due to Scott's drinking antics, but reunited after he attended therapy and temporarily gave up alcohol. However, the death of his parents last year is thought to have triggered the star's bingeing again and he was hospitalised in June of this year for alleged alcohol poisoning.

Amid the troubles Kourtney has her sister Khloé by her side, who is said to be helping after dealing with her ex-husband Lamar Odom's reported drug use last year.

"Khloé is 100 per cent behind her. She gets on really well with Scott but feels Kourtney has every right to monitor him," the insider added. "Kourtney is at her wits' end with him. She has tried to talk to him and he won't listen."

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