Thanks for your question on Healthcare Magic.
I can understand your concern.
You are having
dry cough since 3 days only. This is most likely due to viral upper
respiratory tract infection (URTI).
And in this no antibiotics are required.
Viral infection usually heal by itself in 1 week.
So in my opinion, you should avoid taking excessive antibiotics because they will cause resistance and side effects.
For your dry cough, do following things for better symptomatic relief.
1. Avoid oily and spicy food.
2. Avoid hard to chew food.
3. Drink plenty of fluids orally and keep your self hydrated.
4. Do warm water gargles 5-6 times a day.
5. Take over the counter antihistamine and anti inflammatory drugs.
You will mostly improve with all these in 1 week.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.