亲爱的医生您好，请原谅我蹩脚的英语。事情发生在两周前（1月9日）。我是一个双性恋男人。我从来没有肛交过，真的。因为我害怕感染艾滋病。那天，我和一个男同性恋者自慰。我们把阴茎放在一起，我们的龟头接触着。另外，我明显感觉到我的龟头（尿道）有液体，但我不知道那是我的前液还是他的。然后他给我进行了无保护的口交（我让他在短短两秒内停止这种行为）。另外，对方用阴茎摩擦我的肛门外侧（我发誓他的阴茎没有插入我的肛门），但在这之前，他用手指摩擦我的肛门外侧（还没有插入）。我担心我的痔疮出血，他的前液可能会碰到伤口。 

我问了我们当地的医生，他告诉我有一定的感染风险。但当地疾控中心的另一个医生告诉我没有风险。我真的需要像你这样的专家告诉我我会感染艾滋病吗？谢谢。

Hello, dear doctor, please forgive my poor English. The incident happened two weeks ago (January 9). I am a bisexual man. I've never had anal sex, really. Because I'm afraid of getting hiv. That day, I masturbated with a gay man. We put the penis together, and our glans is in contact. In addition, I obviously felt that there was fluid in my glans (urethra), but I don't know whether it was my pre-fluid or his. Then he gave me an unprotected blowjob (I asked him to stop this behaviour in just two seconds). In addition, the other party rubbed the outside of my anus with his penis (I swear his penis was not inserted into my anus), but before that, he rubbed the outside of my anus with his fingers (not yet inserted). I'm worried that my haemorrhoids are bleeding, and his pre-fluid may touch the wound.

Thank you, Dr. Handsfield. In fact, a long time ago, I had a similar experience. At that time, I knew from medhelp that as long as there was no unprotected vaginal and anal sex, there was no risk of HIV infection. Obviously, I was frightened by the content on the Internet. It seems that any behaviour is "risky", but I don't understand. The two doctors I asked said the opposite, which made me even more confused. It seems that the CDC doctor's statement is closer to yours. He suggested that I don't need PEP and testing.

1. As long as I don't have unprotected insertion sex with others, don't I have to worry about the risk of infection with HIV? 2. Do you agree with my "local CDC doctor"s advice on my behaviour this time (no PEP and testing)? 3. I know on the Internet that HIV can enter the body through the urethral mucosa, but CDC doctors told me that this usually occurs in real insertional sex (must be in the human body). Is this true?

Doctors in our country are relatively conservative, and most doctors believe that any behaviour has a risk of infection (which may be true), but it makes me nervous. So I really need a more authoritative and professional doctor like you to answer my doubts.Thank you!

Thank you again, Dr. Handsfield. I've never had anal sex, so it seems that I don't need to worry. During this period, I have fallen into deep anxiety, and even the CDC doctor suggested that I see a psychologist. Your words make me feel much more at ease. Yes, I think it's a translation problem. The outpatient doctor just said that "there are certain risks". Can I understand that theoretical risks may not exist in reality, but just their statement for the sake of conservatism?

The doctor of the CDC is an expert in dealing with STI in our provincial medical institutions. I think his professional knowledge is richer. He has repeatedly told me that my behavior is not risky and does not need any worry. He told me that he had never seen any case of behavior like mine (masturbation, or even contact with body fluids). Are you and Dr. Hook the same?