Ferne told fans it was "nothing serious" but said she was "gutted" to be missing out on all the drama.
On Snapchat, she explained that she was admitted to hospital after injuring herself in a game of netball.
Ferne said in a video: "Netball tonight didn't go very well but I hope you're all tuning in to The Only Way Is Marbs. I'm in A&E."
Sending another update once she arrived home, Ferne said: "Catching up on TOWIM. For those who were worried, I'm fine. I've torn ligaments, I'm in a lot of pain."
Ferne will now spend the next week on crutches. She added: "No break, which I'm buzzing about, but I've got to be on crutches for a week, so if you see me, help me out because I'll be on a crutch."
Not letting the injury get to her, Ferne shared a new selfie with fans this morning of her right ankle bandaged, saying: "Can still look cool/alright on crutches."
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