It's after Calum failed to turn up for his appearance on CBB spin-off show Bit On The Side last night, forcing an audience member to step in.
This morning Calum was due to appear on ITV's Lorraine to talk about his time in the house but she revealed: “Calum’s called and he’s not well, well someone else called for him. We wish him all the best!”
According to host Rylan Clark-Neal last night, no one had any idea where Calum was when he failed to appear for the show.
Instead, a member of the audience took his place on the panel.
At the start of the show, Rylan told cameras: "Finally we were supposed to have Calum Best on, but we genuinely don't know where he is. This ain't even a gag. This really ain't.
"So, I had a little thought and thought who could I put in Calum Best's place tonight? It's got to be someone quite close to him. So, I love her and I think she deserves this so please be upstanding for our very own Barbara."
Calum was evicted from the show on Tuesday night after polling the fewest votes in the final vote. Lines had frozen and Calum was the least popular of the then seven finalists at that point.
He tweeted after his exit - but before 'disappearing': "Been an amazing ride #CBB TBF can't wait for the real world ✌🏽️YES! #CBBCALUM"
Celebrity Big Brother and Bit On The Side continue nightly on Channel 5.