I have red spots on roof of mouth to the back of throat and also severe sore throat any help?

Get throat culture: Go to your doctor or urgent care clinic to get throat culture. Bacterial infection may benefit from antibiotic by viral infection should resolve on its own.

Virus: Could be a secondary hermetic outbreak. Most people had the chicken pox as a child and have the herpes virus lying dormant in their system. A herpes outbreak in the mouth can look like little spots with a red ring around them. Give it a week to ten days and it may be gone.