thanks for asking your question I completely understand your issue cough is a symptom for variety of diseases like tb , urti , lrti, bronchial asthma , gerd. you should take a proton pump inhibitor like pantoprazole once daily before meals and some bronchodilator syrup like combination of abroxol and guaphenesin which will ease the cough due to bronchi constriction . consult a pulmonologist , he ll prescribe you with all the medications above . frequent cough in your case seems to be due to bronchoconstriction pulmonologist will evaluate the cause by requesting some investigations like chest xray and spirometry . headache is because excessive cough leads to increase intra cranial pressure. once cough will get relieved headache ll decrease subsequently. thanks / regards feel free to ask more questions may god bless you with good health