Maybe I worry too much, but I want to know how bronchiectasis will affect my overall health.?

See pulmonologist. That's a lung specialist who will check your labs, x-rays, and other studies to see cause and extent of your disease. Only then can he tell you your prognosis.
Bronchiectasis. Bronchiectasis shares many clinical features with chronic obstructive pulmonary disease (copd), including inflamed and easily collapsible airways, obstruction to airflow, and frequent office visits and hospitalizations. The diagnosis is usually established clinically on the basis of chronic daily cough with viscid sputum production, and radiographically. See a pulmonologist asap.