@sammy15 The following article just appeared in my inbox, from Mayo Clinic! Good timing!
Would you take a look at it and tell me if there is anything here you can relate to, that will help you with your mouth sores?https://www.mayoclinic.org/diseases-conditions/cancer/in-depth/mouth-sores/art-20045486
Ginger

Hi @sammy15 , I had awful mouth sores with chemo, my doctor ordered a rinse from the compounding pharmacy. I understand that that the medicines were in there to help it heal but there was also something in it that took the pain away immediately so that I could eat. It was kind of thick and flavored with fruit. You swish for a minute then spit and do not rinse. Have you talked to your doctor yet about these sores?

I have not had sores but this last session caused Thrush, yeast infection, in the mouth. My team did not think the Miracle wash was enough so gave me a higher concentration of a Nystatin mouth rinse that swish and swallow. That has certainly helped. Warm salt-water rinsing also helps with oral issues. Do it several times a day and do not drink anything for a while after rinsing.