It is very common to catch a cold in winter. To prevent them, I highly recommend getting an annual flu vaccine and practising frequent hand hygiene. Keeping yourself warm, staying well-hydrated, and maintaining a balanced diet will also support your immunity. For treatment, plenty of rest and warm fluids are essential. You can use saline nasal sprays or steam inhalation to relieve congestion. For symptom relief, paracetamol helps with body aches or fever, cetirizine can ease a runny nose, and dextromethorphan can quiet a dry cough. If your symptoms worsen or last more than ten days, please consult a healthcare professional for a checkup.