Incessant cough at night. What dosage?

Symptoms started 7 days back - Sore throat, difficulty swallowing, Larynx inflammation (partial loss of voice), cough, sinus headache & red, watery eyes. NO fever, runny nose, or nasal congestion. Now eyes & headaches are better.  But, dry non-productive cough throughout the night for last 3 nights resulting in no sleep.  Treatment so far - Paracetamol & Benadryl Dry Cough syrup. Can't continue without any rest at night. Please suggest remedies/treatment for my ailment, especially the nonstop cough at night.  Should I go see a doctor or will it resolve on its own with self care? Is it time for antibiotics or perhaps something else? Is so, what & at what dosage? Thanking you in advance for your time and consideration. Look forward to hearing from you soon.