I had a breastduct infection - the size of a lentil.
My body and joints hurt so bad - I could not get up to hold my brand new glorious baby boy - I thought I was dying.
So - my thoughts are yes, it could be the sign of infection.
Lots of garlic - lots of lemon - lots of water - lots of pure Celtic Sea Salt - lots of Cayenne pepper in lemon or broth.
I'd say try it it cannot hurt you.
If you do have some Lugol'sIodine or Colloidal Silver , by all means I'd unpack them now... and you must MUST MUST move actively to help your lypmph system to clear your body of whatever it wants to expunge.