<s>[INST] Should I be worried if I have dry cough for 3 days? [/INST] Nope.  These things happen.
When you stop coughing after 3 days because you cannot breath, it is probably time to see a doctor.</s>\ <s>[INST] If I stopped coughing after 3 days because I cannot breathe 
wouldn't I be dead? [/INST] My bad. Forgot human can not live without breathing.

Netherless if you are coughing for more than 3 days, you should go and visit a doctor.
Also if your coughing gets more intense you should also consider visiting a doctor.</s>