Dreamrush, welcome and don't give up. After a 45 year struggle with the analogs I stopped all at once. Been off since 8-6-12 and loving the feeling. A cough is very common when you switch. Ever yell so loud your
throat got scratchy? Well, your lungs may be at that point, yelling WE'RE FREE!!!. Next thing you know you are coughing. Mine started after about a week and lasted on/off for maybe 2 weeks.
My advice would be to stop the analogs 100% to let your lungs start to fully heal. Check with a Doctor if symptoms persist and enjoy using the great information available from the experts here. I have and will never Look back.