Katie Price is said to be in so much pain that she is barely able to eat and has lost half a stone in five days.
The 42-year-old underwent six-hour surgery last week after breaking both of her feet and is now embarking upon a lengthy recovery process which could take up to two years.
According to The Sun, the former glamour model has been left in "agony" after the operation and is struggling to eat or sleep.
"Katie's on all these pain medications but she just can't sleep she's in so much pain," a source told the newspaper.
"She's gone off her food, which is unlike her, and has lost half a stone since the operation. She was already tiny, so everyone's trying to tempt her into eating again as she can't lose much more."
A spokesperson for Price added: "Katie is certainly feeling exhausted after her most recent surgery - not being able to fend for herself and indeed prepare her own meals has had an impact on her weight. Katie has had an awful lot to deal with these past weeks.
"With rehabilitation commencing soon and planned nutritional balanced meals Katie will be back to fighting weight soon. Katie is already showing signs of a steady recovery."
Price was recently gifted a £10,000 pink diamond-studded wheelchair to assist in her recovery.