Throat pain. 625 and germicide gargle)

I had a mild cold with headache, Next day, I had mild headache and a one-time fever of 100.1°C. I didn't took any medication, next day woke up with brown blood in my mucus and felt fatigued all day. again morning, I noticed brown mucus with some bloody sputum. I developed throat pain, The pain started from sound box extending to the center of my chest. This ache-like pain intensified when walking or climbing steps, but it lessened when I sat down. noticably i don't have a cough or runny nose. No pain while talking and eating. both of my tonsils appeared slightly red and swollen, and the tissues on throat wall seemed swollen as well, tongue had a yellowish tint. I went to doctor and took medicine, medicine reduced my pain and syntoms  greatly but yesterday onwards again my throat started to pain, after 4 hours of medicine it starts again (prescription given Augmentin 625 and Germicide gargle)