Thanks for writing your query.
It will be advisable if you mention the names of the antibiotics you are taking and for how long you are taking them.
If you are not habitual to smoking
, a cigarette can result in coughing and headache.
Smoking can result in bronchoconstriction
leading to cough. If you are having respiratory infection, intensity of cough can be more.
Headache can be due to pressure of excessive smoking.
You should keep yourself in fresh air for some relief and drink lots of pure water.
If the problem persists,you can take antihistaminic like cetrizine
10 mg for cough and paracetamol
500 mg for headache after getting yourself examined and investigated at the Emergency Department.
I hope this is helpful to you.