Lucy Mecklenburgh and Ryan Thomas' son was rushed to hospital after being found "blue" in his cot.
Roman in hospital (c) Instagram
The couple are relieved that 18-month-old Roman is now home after being treated on a ventilator in intensive care last week after they went through "every parent's worst nightmare" when they discovered the tot unresponsive in his bed.
Explaining her recent social media absence, Lucy wrote on Instagram: "As some of you may have noticed we haven't been on social media lately.
"Just over a week ago I found Roman blue in his cot - probably every parent's worst nightmare.
"Without going into too much detail it ended up with Roman being transferred to St Mary's London intensive care being put on a ventilator.
"Thankfully we are now all home and Roman is back to his cheeky self."
The former 'Only Way is Essex' star admitted she is unsure they will ever recover from the impact of Roman's medical ordeal.
She added: "Although mentally we as a family may never fully recover, we feel extremely blessed to have our special boy home in our arms and it has truly opened our eyes to all the hardworking superheros working in our hospitals."
Her fiance, Ryan, admitted the last week had been the "scariest time of their lives" as he paid tribute to the medical staff who had cared for his little boy.
The former 'Coronation Street' actor wrote on his own Instagram account: "No words can explain how grateful we are to have our little boy home safe after spending nearly a week in intensive care.
"As parents it’s been one of the scariest times of our lives but with thanks to our amazing doctors & nurses we have king Roman back playing, smiling & more importantly eating.
"I would like to thank the @nhs and also @cosmic_charity who have been unbelievable, You both really are the real life superhero’s."
To give back to those who have saved their son's life, the couple have launched a fundraising page for Cosmic Charity, which looks after babies and children in intensive care, and have already raised over £12,000.
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