Source: Kylie Jenner 'Terrified' Of Gaining Baby Weight

Kylie Jenner is reportedly pregnant with boyfriend Travis Scott's baby. The 20-year-old reality TV star and model has yet to confirm the news, but that hasn't stopped rumors from spreading.

A source claimed to know the reason why Jenner has been in hiding since news of her pregnancy broke.

"Kylie told her entire family that she is going to avoid the cameras and selfies once she starts gaining weight because she does not want her fans to see her like that," the source told Radar Online. "She is legitimately scared over the amount of weight she is going to gain and is looking into ways to make sure she gains as little as possible."

The source added that Jenner is "mortified over getting fat."

The source also said Jenner "saw how fat Kim [Kardashian] got when she was pregnant and she is just praying the same thing won't happen to her."

Jenner is also reportedly concerned about another common physical change that occurs during pregnancy.

"She is telling her sisters that she really does not want to get any stretch marks on her body and is asking them if there is anything she can do to prevent that from happening," the source said.

According to the source, Jenner's "sisters and Kris think she is being absolutely ridiculous because weight gain is a part of pregnancy," adding: "There is nothing she can do to really avoid it. They want her to eat healthy and eat a lot, but that is not something that Kylie is used to doing."

Another rumor circulating around Jenner's pregnancy is that she has employed assistance to help ensure that her baby will be healthy.

According to the Daily Mail, another source told Radar Online, "Kylie hired a pregnancy coach too, who will help her with nutrition and exercise, as well as take her through Lamaze training when she gets further along."

The coach reportedly said: "Kylie is definitely not taking any chances when it comes to her unborn baby!"

The 20-year-old has also reportedly hired four new assistants to help run her company, Kylie Cosmetics. It has also been reported that she added more personal security guards to keep her safe throughout the pregnancy.

News of Kylie's pregnancy came after rumors also circulated that her sister, Khloe Kardashian, is expecting with her boyfriend, Tristan Thompson. Then, Kim also revealed that she and husband Kanye West will be having another child via surrogate.

Sources: Radar OnlineDaily Mail / Featured Image: Disney/ABC Television Group/Flickr / Embedded Images: Max Pixel (2)