I'm sorry to hear you're feeling unwell with a common cold and headache. To help you feel better, here are some simple steps you can follow:

• Rest well: Give your body time to recover by getting plenty of sleep and avoiding strenuous activities.
• Stay hydrated: Drink warm fluids like water, herbal teas, or soups to soothe your throat and stay hydrated.
• Use over-the-counter remedies cautiously: There is a medication called New Hatric 3 Tablet that combines paracetamol (for pain and fever), diphenhydramine (an antihistamine), phenylephrine (a decongestant), and caffeine. It can help relieve symptoms like headache, congestion, and runny nose. However, this medicine requires a doctor's prescription and should be taken only as advised by a healthcare professional.
• Manage symptoms naturally: You can use warm saline nasal drops or steam inhalation to ease nasal congestion.
• Avoid irritants: Stay away from smoke, strong perfumes, or cold air that might worsen your symptoms.

If your symptoms worsen, persist beyond a week, or you develop high fever, difficulty breathing, or severe headache, please consult a general physician or an ENT (ear, nose, and throat) specialist promptly.

Remember, self-medicating without proper guidance can sometimes cause side effects, so it's best to seek advice from a doctor before starting any medication. Take care and get well soon!To narrow down potential causes, we will need some more information.To provide you with the most suitable advice, could you please share your age and gender?