Yours pain seems most likely related to tonsillitis/pharyngitis/epilglottitis; all of tham
are local problems of oropharynx
and related to bacterial/viral infections.
You did not mention your age but if you are a middle aged man and there are other comorbidities present then this pain may be related to Myocardial Infarction/ Unstable Angina
In any case a quick review with your physician today only is highly recommended because sometimes in later case tomorrow never comes!