Hi I have had a chronic cough for several months and have had several tests done such as a chest xray, cat scan, pet scan and a lung test and the dr. said that all tests came back fine. I take Atenolo , Omeprazole, simvestatin, ursodiol. I stopped taking certizine because I thought that may be causing my cough and I didn t see any difference. I looked up the side effects of Hydrochlorthiazide and i stopped taking this on 4/29 and I started feeling better but the last few days I have started coughing really bad again and don t what to do?