you haven't provided with your personal history, i.e., whtr smoker or not? assuming that you are not smoker, these white spots
can be either inflammed orifiices (ductal openings) of minor salivary glands, if they are surrounded by red halo, or they may be candida Fungal infection
or lastly leukoplakic patch in case if you are smoker. In any case, i feel it is nothing much significant in terms of dangerous potentials. Also, as you have recently suffered with sore throat
, it may be a manifestation of that viral effect only.
Kndly seek a dentist/ oral medicine expert's advise for a clearer picture
as detailed history is required for any further attempt to diagnosis.