Since your current antibiotic and cold medication aren't providing relief, the infection might be viral, or the bacteria may require a different approach. You should consult your doctor to discuss alternative options. These may include switching to a different antibiotic class, such as amoxicillin-clavulanate, if a bacterial infection is confirmed. For better pain and inflammation relief in your throat and ear, ask about incorporating an anti-inflammatory medication like ibuprofen instead of paracetamol alone. Additionally, using saline nasal sprays or decongestant drops can help relieve eustachian tube pressure causing your earache. Rest well and stay hydrated while your doctor reviews your treatment plan.