Tested positive for strep 4 days ago received shot white patches still on tonsils, throat is still sore roof of mouth is now white

10 days: Strep throat can be treated from 5-10 days, depending on the antibiotic.It is very important to treat long enough for a cure, in order to prevent major complications like rheumatic fever or kidney damage

See doctor: Sometimes the antibiotics used to treat strep can result in a fungal infection to appear as white patches. Go back to your doctor.