hhh博士关于kj对传播性病的回答，没时间认真翻译了，凑合看吧！！！

救救我吧，上帝 · 发表于 2013-2-19 00:27:12

本帖最后由救救我吧，上帝于 2013-3-6 22:50 编辑

hhh博士原话
Unprotected oral sex is much lower risk for all STDs than vaginal or anal intercourse, and probably zero risk for many of them.  The main recognized risks of fellatio (i.e., for the insertive partner whose penis is exposed) are gonorrhea, herpes due to HSV-1, nonchlamydial nongonococcal urethritis (NGU), and syphilis.

Gonorrhea virtually always causes symptoms; if within a week there is no abnormal penile discharge, usually with painful urination, you can forget gonorrhea.  Herpes risk depends in part on prior infection; as you say, it is not a risk in people with prior HSV-1 infection (or low enough to be disregarded). The frequency of NGU isn't certain, but if you have no discharge or uncomfortable urination after 2-3 weeks, you can disregard it.  (In any case, NGU due to oral bacteria may carry no health risk for a person's other sex partners.)  Syphilis is uncommon after oral sex, but the risk depends a lot on geography, partners' risk factors, etc.  Syphilis usually shows up as a painless penile sore (the chancre) 3-6 weeks after exposure.

Everybody worries about HIV, but the risk is theoretical more than real.  Although there have been claims of acquring HIV, there are few if any proved cases.  If it occurs, it is extremely rare (estimated at no more than 1 chance in 10-20,000 exposures to an infected partner).  Still, the wise person in your situation will ask a male partners whether or not he has been tested recently and whether he has HIV.

So the answers are that your GF probably isn't in danger, the risk you are infected is minimal (assuming you still have no symptoms), and most experts would not have prescribed the antibiotics--but if you take them, you're pretty well covered against the bacterial STDs.
百度翻译.
无保护的口交对所有性病的传播比阴道性交或肛交的风险要低得多，甚至对很多性病来说可能是零风险的。  主要认可的风险（即，用于插入伙伴的阴茎暴露）是淋病，疱疹由于单纯疱疹病毒，衣原体非淋球菌感染非淋球菌性尿道炎（NGU），和梅毒。

淋病几乎总是引起症状；如果在一周内没有阴茎异常放电，通常有排尿疼痛，你可以忘记淋病。  疱疹风险部分取决于现有的感染；如你所说，这是不与之前的HSV-1感染人的风险（或低到可以忽略不计）。NGU不一定频率，但是如果你在2-3周没有放电或不舒服的大小，你可以忽视它。  （在任何情况下，NGU由于口腔细菌可能会对一个人的其他性伙伴。没有健康风险）在口交  梅毒是罕见的，但风险取决于地理很多，合作伙伴的风险因素，  梅毒等通常表现为无痛性阴茎疼痛（硬下疳）暴露后的3-6周。

每个人都担心HIV，但风险是理论多于实际。  虽然已取得HIV索赔，如果任何证实的案例很少。  如果它发生，这是极为罕见的（估计不超过1的机会在10-20000暴露于感染者）。  依旧，你的情况聪明的人会问一个男人他是否已经过测试，最近和他是否有艾滋病毒。

所以答案是，你的女友可能并没有危险，你被感染的风险是最小的（假设你还没有症状），和大多数专家都没有开的抗生素——但是如果你把它们，你很好的覆盖对细菌性病。