Are these signs that i have bronchitis?

You may have bronchitis since you have frequent coughing causing inflammation of the bronchials(bronchitis). You may have pneumonia as well. If you are running a temperature, are wheezing or short of breath please see a doctor as soon as possible. A cough suppressant may help, but if you have an infection you will need antibiotics and maybe even steroids for inflammation. If your brother is showing the same symptoms you may be contagious so see a doctor for a chest x ray and full essment. Hope you feel better soon.