This is one of those topics where you have to use a lot of common sense. Let's take John, his penis is no bigger than his middle finger.
Well, if he's behind you...that is one whole story. But let's take Jack.
His penis is ten inches long and as as fat as a jelly jar. (He's Jamaican). Now if he's behind you, there's a different situation...right?
Take George, he's a big guy, so John is no more than a thermomitor to him. Jack now...that's going to take some careful manuevering.
Take Tim, his small and slender. John is just right, and Jack will put him in a hospital.
Ive seen enormous guys, big fat tall talking about anal sex like it is one size fit all, and seen some slender guys like Tim who has never dared try it.
If one goes to their doctor ... and let's assume as he's your doctor he knows about you and is treating you...he can be of some benefit
to help you make up your mind.
Just dismissing the medical profession like that shows the kind of bush ignorance expected two hundred years ago.
You know, back in the 30s women went to doctors before they got married to make sure everything would be okay when they had sex and the doctors spoke to them of lubrication, of relaxation, etc.
Today, the homosexual man is supposed to have found a doctor who will speak to him the same way.
A lot of people have hemeroids and don't even pay much attention to it, so imagine what would happen on your big night if there's blood everywhere...
Just calmly find a doctor you can talk to, and get his one on one advice.