In an emotional clip uploaded onto Instagram, Charlotte, 28, explained her mum Tracy has just been diagnosed with type 2 diabetes, meanwhile Charlotte's doctor has told her she is "on the verge" of also having the disease.
As fans will know, Charlotte - who welcomed baby Noah earlier this year - was diagnosed with gestational diabetes during pregnancy.
You can watch part of the clip below:
Alongside the video, Charlotte wrote: "This is quite serious as I didn't really think I'd have this problem... but if you also had gestational diabetes while you were pregnant this is something you have to check after!! I just thought it goes away when you've had your baby.
"But this is a different diabetes this is type 2... I mean not everyone gets it. But with my family history it was bound to happen. My dad battled it & obviously had it when he died... My mum has just been diagnosed with it... which has just really made me so upset anxious and scared.
"I know it's manageable but as she's 70 just broke me and I have now been told I'm on the verge of having it if I don't change my diet ASAP. So it has come as a massive shock as I thought I was ok and I could go back to eating my chippehs n takeaways that I missed out when I was preggo.
"Now I have to do all that again and if you know me you know I find eating really healthy food hard ffs ... which is silly really as healthy is good, but I've always just been a chipoholic. My doctor is keeping a close eye on me as to whether I need to go on insulin or not.
"I just wanted it to get off my chest as I honestly get so many messages daily about gestational diabetes and this is so scary because I thought that was it... but you're more likely to get diabetes if you had it!! I urge all of you to check after as I wish I did.. my mum made me check and thank god I did."
According to charity Tommy's, gestational diabetes often goes away after birth, but those who have had it are more likely to develop it in the future, and type 2 diabetes.
"If you've had gestational diabetes, you have up to a 1 in 2 chance of developing type 2 diabetes in the next 5-10 years. You are also at higher risk of developing type 2 diabetes for the rest of your life," the charity explains, adding that eating well, staying active, having a normal BMI and stopping smoking can help reduce the risk.
Fans were quick to support Charlotte and offer reassurance. One wrote: "Be positive and sensible with diet, you've got this girl & Nanny will be fine with education on diet and being sensible, completely understand you anxiousness regarding your Mam, was the same with mine after losing my dad she'll be grand, good luck gal."
While another said: "We are with you every step of the way Charlotte! You can do this!"
And a third added: "You got this babes, you're a strong lady."
You can find out more information about diabetes and pregnancy here.