Since your symptoms have lasted three days, it is likely a common viral cold. For relief, you can take paracetamol for body aches or mild fever. If you have a dry cough, dextromethorphan can help; for a wet cough with mucus, guaifenesin is suitable. Saline nasal sprays can ease nasal congestion. Additionally, prioritise rest, stay well-hydrated with warm fluids, and try steam inhalation. Most viral infections resolve on their own within a week. However, please consult a healthcare professional in person if you develop a high fever, difficulty breathing, or if your symptoms do not improve after 10 days.