The former Hollyoaks actress, 23, sparked concern overnight when she tweeted and deleted: "#praying #stress #hospital #heartesslyevil."
She then posted an image to Snapchat showing her arm hooked up to an IV.
But now, the Celebrity Big Brother housemate has returned to Twitter to assure well wishers she is okay: "I'm all good and back at home thanks for the support. Resting up xx."
She provided no further explanation for her hospital visit.
We've contacted her rep for comment.
Stephanie's medical treatment came after she announced a pregnancy on Instagram, then swiftly deleted the post. She stunned fans this week by claiming to be expecting in an emotional post allegedly aimed at ex-boyfriend Jeremy McConnell, but later removed the message from her account.
She has not referenced the baby news since, although she has favourited a few tweets about pregnancy, including one that read: "Unplanned doesn't mean unwanted or unloved."
Meanwhile, Jeremy, 25, has said: "Just to be clear, if what is circulating is true, I'll always be responsible for my actions and I explained to Steph I'll speak to her, and do everything for her, if she stops drinking and partying knowing she's "pregnant". I'm sick of tit for tat but I won't let anyone slander me. I haven't been ideal in the relationship whatsoever, I'm trying to move on peacefully, it's a shock to most, but a kid can't fix a broken relationship."
They met on CBB in January but have had a rocky relationship, splitting and reuniting on numerous occasions. Their most recent break up was at the start of May.
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