About 8 days ago I began feeling my sore throat, fever went up and had a headache, I took normal home remedies and medication such as paracetamol as I thought it was just the cold, it did not progress so on the fifth day I went to the GP and was diagnosed with tonsillitis, so for the past 3-4 days I've been taking Penicillin three times a day. Two days ago, my upper left arm/muscle began aching, it is still aching and I'm wondering if this is a symptom or related