Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain
Thrush in throat is also known as Oesophageal thrush and is due to yeast infection and in your case it is due to low immunity status caused due to cancer and also chemo and radiotherapy..
The medication advised to you that is
Fluconazole that is an antifungal agent is appropriate and should continue taking the same..
The pus like accumulation that you experience can be due to secondary bacterial infection leading to pus formation while can also be due to excess mucous formation secondary to infection..
If it is pus, continuous swallowing of large quantities of pus can infect the stomach, therefore you should consult your
Oncologist and get evaluated and treatment of the exact cause of the problem will be done only after proper investigations..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..