Her organs are barely noticeable in an X-ray as her chest cavity fills with faeces, leaving her struggling to breathe.
Now her family and friends have created a desperate crowd-funding page to help her receive private treatment for her condition, saying their 'happy, strong and determined' friend is barely recognisable.
Kelly, 34, has spent the past 11 weeks in Southmead Hospital, Bristol, vomiting her own faeces after she claims a surgeon damaged her bowel during a routine surgery.
Posting the image of her X-ray on Facebook earlier this month, she wrote: 'For those who don’t quite understand the extent of my condition, this is my X-ray, the whole thing is a picture of faecal loading can’t even see my organs.
'And yes it’s all in my chest too, my diaphragm and lungs are so high up I can barely breathe.'
Writing on a GoFundMe page they set up to fund Kelly’s treatment they wrote: 'Due to a slip of the scalpel, during a minor surgical procedure, Kelly Yeoman’s bowel was knocked, leaving her with a collection of infection which required two further surgeries to correct.
'As a result, her bowel is now unable to function. She is now horrifically faecally impacted, she is regularly vomiting a foul mixture of her last meal and her own excrement, and she is struggling to breathe.
'Nothing seems to be working and we are watching her go gradually downhill — she is almost unrecognisable as our happy, strong and determined friend.'
Kelly's friend Kate Rankin has said, 'This is a woman who should be enjoying every moment of her life, not lying helpless in a hospital bed, drowning in poo.'