Hi, Last 20 days I have noticed that I am

Patient: Hi, Last 20 days I have noticed that I am not having a erection. THere is burining sensation in the penis. I have throat infection 20 days back and took erythromycin 250 for 3 days. I am 42 year old and heavily built. What could be the problem. Also my Cough is not gone completely.

Symptoms: Burning sensation in penis and erection problem

Doctor: