Currently on day 4 of a sinus infection, never had one before. The pain is so intense, it feels like severe tooth ache but in all my teeth on the left side, I can't sleep, can barely eat anything. I've tried paracetamol, saline nasal rinse, hot flannel, steam. Nothing is really easing it. I started on an antibiotic this morning but was told it may not work depending on what type of infection it is. Anyone know how long it usually takes for the pain to start to ease of? Or anything else I can do to ease the pain?