I had strep throat completed 10 days of antibiotic about 4 days ago. now i have a congested cough that has a very bad taste when i cough. any suggesti?

Infection: It is possible that your lower respiratory tract has become infected with a different or similar, resistant bacteria which is causing bronchitis. You may need additional antibiotics with a medication that will better target this area. Guaifenesin, more liquids, & humidification may help. You should discuss this with your doctor, if you need further assistance.