An Unexpected Encounter at the Doctor's Office

Ok here it goes. Im a 49 year old man. Been married for 12 years. Im getting older and having problems getting hard and finishing. My wife is a expert at sucking. But I would wear her mouth out. So we talked about it, That I need to see a doctor. Me being a guy, im embarrassed that i can't stay hard. I have to get medication. I have never had a problem, to get hard in a second and cum two or three times. So I email my doctor, he sent me to a specialist. I went in for my appointment. They put me in a room waiting. Doctor knocked, he was a very young doctor. He asked what's going on i told him. He talked about medication that he could put me on. Then out of the blue, asked to see my cock. I was so embarrassed. I walked over and pulled down my pants. He examined my cock and balls. Im a straight guy but my cock started getting hard. I was turning red. He said it's ok, He like started milking it. He said was checking for blockage. I was so hard. I did realize that I was moaning. I've never been touched or even thought about a guy playing with my cock. He asked if im alright. He asked me if I want him to stop. I said no. My eyes were closed, then it happened, my cock went in something warm. He was sucking my cock. It felt so good but so wrong. Then I could feel that im going to cum. I came in his mouth and he swallowed every bit. He looked up at me and asked if im ok. Then he sucked the left overs out of my cock. He prescribed me two meds and wants to see me in 2 weeks. Now can't wait to see him again. Im straight, but I want to see his cock. Till next time.