Hi, for the past week now I have been experiencing a sore throat. It really hurts to swallow at the side of my throat and my ear on that side hurts. I also cannot open my mouth very wide and when i try my ear really hurts. The back of my tongue is also very sore. I have been on penacillan now since thursday and have hardly seen an improvment. My main concern is opening my mouth. I also cannot talk properly as a result of this. What could this be? and why is the medicine not working?