Hi Tanya,
There are many causes for feeling unwell and having elevated liver functions, but in somebody who has just finished treatment for hep c with Zepatier (or Harvoni or Maviret or Epclusa) treatment failure would be top of the list.
While the treatment failure rates are low 95% cure rate means 5% failure rate – so if I treat 20 patients with Hep C this week one will fail.
As Mar has said – you need an HCV PCR RNA test to see if the virus is still present.
If it is, don’t panic. Retreatment is easily done and very effective.
If it isn’t we need to look for other causes of problems.
Either way you probably need a doctor with more of a clue…