The actress - who is usually very active on her accounts - was last seen tweeting on Boxing Day, while she hasn't shared a post on Instagram since Christmas Day.
She dumped her then-boyfriend Sam Reece to be with Jeremy after the show ended, but their relationship turned out to be turbulent, allegedly because of the Irishman's cheating.
"Thank you for all your support".
Jez, 26, who's now holidaying in Thailand, has always denied that the baby is his despite Steph being adamant that he's the dad - so the pair haven't exactly been getting on recently.
He did not make the birth of his first son, but it looks like Steph couldn't care less as she previously said: 'I'm not really bothered about him anymore.
He added: "Any timescale for that is in Steph's hands now".
However, her reps have told the Mirror Online: "He has never reached out and she's all alone with her son".
'She is happy, but disappointed and saddened that Jeremy would resort to the media to peddle lies'. I did reach out to her some weeks ago but didn't hear back, ' Jeremy explained the situation further.
Although her ex, Jeremy McConnell, who Steph insists is the father of her baby, jetted out to Thailand just days before her labour.
In a statement to OK!
Ex-Hollyoaks star Stephanie Davis has given birth to a baby boy! "Mother & baby are doing fine".
The pair first got together after appearing as fellow contestants on Celebrity Big Brother in 2016, months after Davis finished a five-year run playing Sinead O'Connor in Hollyoaks.
Jez denied he was the father and refused to take a paternity test before the child arrived. Hopefully now there's an innocent baby's welfare to consider, it will put a kinder complexion on things...