Kindly get opposite quadrant, (if this is 48 then get 1st quadrant) evaluated too.
CRP is mildly elevated, doesn’t seem bothersome to me as it may be elevated to this level due to some common conditions too. If its taking toll on you mentally and then get other blood investigations done by seeking medical opinion.
I can see little radiolucent area in the distal aspect of the tooth in your IOPA. Plz get this checked if you have any distal caries