Welcome to heathcare Magic!
So what did the doctor tell you after close examination.
As far as I can guess from your history you do not have fever
at present so the phenomenon is not related to pneumonia
and septic emboli which is life threatening problem.
It can be a drug induced vasculitis
or an intercurrent viral eruption disease.
In both these cases a self limiting course is likely and you can take paracetamol
for comfort sos.
But septic embolisation is a serious issue so send a blood culture
and a CBC right now in case you can need a lead in future if it does not resolve as expected.
Wish you a great health!