Finished high dosage of Penicillin 3 days ago but am still suffering severe pain in shoulders, arms, wrists and fingers with swelling in wrists/fingers. I've told doctors about this but they don't seem to take any notice. I haven't even been told what I'm suffering from but I suspect it's cellulitis from reading one of the blood test chits. Are these symptoms normal? How long do they last after treatment has stopped? I don't want to take pain-killers indefinitely.