I'm Having Chronic Dry Cough And Are Been Going On

I'm having chronic dry cough and are been going on for two months. I was taking lisinopril/hyrochrolothiazide when it started and then the Dr stopped it and gave me losartan/hydrochrolothiazide. My cough still continues and I was given some antibiotics ampicillin for 10 days. Now my cough is worse with right chest pain. What's the cause of this