Khloe Kardashian hasn't even given birth and already she's copping serious mum shaming.

When it comes to pregnancies on social media, everyone’s an expert.

Criticisms and assumptions flow as freely beneath Instagram posts as likes and love hearts. And, if a mum-to-be is seen to be doing something supposedly ‘wrong’, well… the entire internet, it feels like, is willing to let her know.

In some cases, it’s helpful. In others, it’s just plain nasty. But now, pregnant reality TV star Khloe Kardashian (who is likely no stranger to social media trolls) has experienced the ‘wrath of the mummy bloggers’ first-hand.

The 33-year-old, who is six months pregnant with basketball star Tristan Thompson, has become somewhat of an advocate for healthy living, posting regularly about her gym routines and diet. And being pregnant has of course not meant grinding her entire lifestyle to a halt.

But since announcing her pregnancy last week, it seems she's been copping criticism for continuing to exercise. And Khloe is confronting the haters head-on.

"For the ones who think they are physicians all of a sudden," she posted to Twitter. "My doctor and I communicate and my workouts are cleared and highly recommended."

LISTEN: Celebrity PhD Anne Helen Petersen, on what makes a 'cute' pregnancy. Post continues after. 

The first-time mum-to-be also threatened to "stop sharing sh*t" (which is highly unlikely but also fair) and linked to an article about the benefits of exercising during pregnancy.

For the ones who think they are physicians all of a sudden ????????‍♀️ but MY doctor and I communicate and my workouts are cleared and highly recommended. Thanks kiddos! Don't make me stop sharing shit https://t.co/7raJUgmcBA

— Khloé (@khloekardashian) December 27, 2017

The criticism came after she shared video clips of herself exercising on a step machine, with weights and using a resistance band on Christmas Eve, People reports.

"I love that I can finally snap my workouts again. Merry Christmas Eve and more workouts to come," she told followers at the time.

But that her followers would suddenly act like they were her doctor? Oh, she had no idea what was to come. We're just glad she tackled it so fiercely.