The former Big Brother star, who is three months pregnant, was rushed to hospital twice in less than 24 hours after suffering from bleeding.
"I was hysterical. I kept thinking, 'This is it'. [We're] fine now. My first internal scan on Tuesday showed the baby was okay, thank God, but then I started bleeding again when I got home," she told New.
"I went back to the hospital first thing this morning [Wednesday] and they gave me another internal scan and the baby was still fine. He was kicking away. He's so active.
"I have a tilted womb so there's a lot of pressure on it and that's why I'm big at three months. But hopefully, it will tilt back by the time I'm due. It's very rare - only 10% of women have it."
Thomas recently slammed the "vile" Twitter users who send her abuse.