Marnie Simpson is "really badly suffering" with her pregnancy, as she's overdue by more than a week.

Marnie Simpson via Instagram (c)

Marnie Simpson via Instagram (c)

The former 'Geordie Shore' star is currently expecting a baby boy with her boyfriend Casey Johnson, but has admitted she's starting to feel "so uncomfortable" as she waits for her tot to arrive, as she's now eight days past her expected due date.

Posting on her Instagram story, Marnie wrote: "Look How big my bump is guys I'm 8 days over due now and really badly suffering!

"Sorry I've been a little inactive it's just Im so uncomfortable now

"Wanna keep you all updated as much as possible but struggling to even talk now lol

"Thanks for all the constant support and messages love you all loads I'll let you know when little one has made his arrival (sic)"

The 23-year-old reality star has been having a difficult time with her pregnancy, as just days ago she revealed she was having trouble sleeping.

Marnie admitted she endured the most "restless night sleep ever", and things are only getting worse as she continues to wait to go into labour.

The beauty's pregnancy hasn't been without weird cravings either, as she previously claimed she has been hankering after bath sponges, because she loves to suck the water out of them.

She said: "I've been craving bath sponges. I like sucking the water out of them."

Whilst a bemused Casey added: "It's a weird craving. I actually have a video of her doing it.

"I literally bought her some sponges the other day but she said they weren't the right ones, so I've got to let her buy her own now."

Marnie was due to give birth on October 16, and said in August she couldn't wait for her son to arrive.

She said: "In the beginning I suffered with nausea, but since getting past 20 weeks I've been a lot better. Considering how bad some people's pregnancies are, I think it's been alright.

"I feel so swollen and bloated, I can't wait for him to arrive now."