Chemo and sore mouth

I had my 3rd cycle of FEC chemo for breast cancer on Monday and now, 5 days later the sore throat I have had has got worse. I now have white spots inside my gums and along my tongue. Difficult to talk or swallow. Chemo nurse said use mouthwashes and as long as my temperature is fine, I don't need other treatment. Cleaning my teeth using mouthwashes, saline solution, saliva gel, bonjela what else can I throw at it? 
I only had a sore mouth on my 3rd week of chemo and this is the 1st week. Anyone else had this? 

Sending healing thoughts to all the people out there going through treatment with the added stress of the Virus and  looking forward to better days.

Silver x