I had strep throat three weeks ago. While taking the antibiotic, I developed a small cold. It went away, but 3 days after finishing my antibiotic, I got another sore throat (a week ago). This sore throat felt better after 3 days, but developed a bad cough and lost my voice. Yesterday, developed stuffy nose, sneezing, headachy. Do I need to see a doctor? Voice is better, but still coughing in addition to the above symptoms.