Parents

Kim Kardashian reveals struggles of having 2 kids: 'Pumping and delirious'

Kim Kardashian West has fame and fortune, but the reality-TV star contends they don't make caring for her two children an easy task.

She said, "He's my best friend."

A post shared by Kim Kardashian West (@kimkardashian) on

In a Wednesday blog post on her website, the famous 35-year-old mom of 2½-year-old daughter North and 2-month-old son Saint reported being awake, "pumping and delirious," at 4 a.m.

"I'm … hiding in my daughter's closet," reads the open line of her update, "because if she sees I snuck out of her bed, she will start to cry AND I think she gave me a cold so I figure no better time to write a #StraightUp [post] than now!"

RELATED: Kim Kardashian shares first photo of Saint West holding hands with big sister North

Kardashian wrote that she and her husband, 38-year-old hip-hop star Kanye West, had been warned parenthood would take a dramatic turn with the arrival of a second child. Issuing one of those warnings was her own mother, Kris Jenner.

"My mom would always say, about having kids: 'One is like one, and two are like 20.' I never really understood that until now," the post reads. "It seemed like every time Kanye and I would go out, we would see couples — or really anybody that had kids — and everyone would say, 'Wait until you have two.' Like it's the end of the world! I remember Kanye and I would be like, '[What] are they talking about? Will our lives be the same? Are we going to be OK?!'"

RELATED: Kris Jenner opens up on Caitlyn's transition, reveals her only marriage regret

Kardashian West "expected" it to be different, but admitted she didn't realize just how hard it would be to care for North and Saint at the same time.

Christmas Eve 2015. I put up tons of pics on my app! Xoxo

A post shared by Kim Kardashian West (@kimkardashian) on

"When I had North, all I did was feed and sleep," the update reads. "This time around, I get no sleep. Every waking second that I'm not with the baby, I'm with North. I actually think the harder parts aren't with the newborn but with the toddler! I feel like I go into overdrive to give my daughter attention and make her feel loved."

Her husband, however, has eased the burden, as has Penelope Disick, the 3-year-old daughter of Kim's older sister and "Keeping up with the Kardashians" co-star, Kourtney.

"Kanye is super helpful, taking North out to dinners (just them!), and I'm so lucky North looks up to Penelope a lot," the post reads. "She also has a baby brother so she gives North the best advice. I have the cutest video of P giving North a heart to heart about being a good big sister."

RELATED: Kourtney Kardashian shares 6-step Kit Kat hack: 'It's pretty life-changing'

Even something as routine as feeding has been "challenging" to Kardashian West, who does her best to do that while multitasking.

Her post concludes: "Being late and running behind gives me anxiety, but I know we will soon get into the perfect groove and just figure it out. My mom did, my sister did — and I will, too."

Follow TODAY.com writer Chris Serico on Twitter.

TOP