Can someone help me with a problem I have?

I am having a problem with my penis. It always feels uncomfortable and soar. When I ejaculate it becomes very red and swollen. I went to the doctor and she prescribed me some cream for a rash. A week later I did a urine test and I had a urine infection which I finished my medication for. It has been like this for about 4 months to this day and it is still bothering me. What might this be??