hello and welcome to HCM,
you seem to have an upper respiratory tract
If your pain is more you can consider taking injectables for better symptom control in consultation with your ENT or even try a throat swab for better medication selection.
However if the symptoms are recurring and since you are getting recurrent such lesions it is advisable that you consult an ENT who may advice treatment which can be in the lines of medication or even removal of tonsil
which can cure the problem
get well soon
take only warm fluids and do salt water gargle
Dr Sriram Nathan