What’s wrong with me??

I’ve had white spots on my tonsils for almsot 5 weeks and the doctor gave me medicine to take and they said come back after I’m done taking he dose if they’re are still there and they tested me for mono and strep and they came up negative and I’ve had one cold sore last month and it went away and now i have another one??? I’m done taking the medicine but idk what’s wrong with me???