 [ Symptoms ] is pre cum enough to catch something  i am a virgin but recently i have engaged in oral sex for the first time with my boy friend i was not fond of it so i stopped long before he is ejaculated so nothing went in my mouth aside from some pre cum i am very anxious though and was wondering if that was enough to catch anything hiv std etc he is only had sex with one other female who was a virgin at that time and so was he he is received oral from another female as well based off of those two factors i believe he is clean as well [ Disease ] you are wise to be concerned but take it one step further insist that your boyfriend use a condom so that you are not exposed to any of his bodily fluids during sexual activity oral or otherwise oral sex is often a gateway activity to other more risky sexual acts so set the parameters now no condom no sex play were you not aware that humans lie or omit the whole truth while your boyfriend may be one of those rare young men who has honestly disclosed his past sexual activity do you think he would automatically disclose a one night stand with someone else while you are dating be wise your risk may be minimal now but stds can be transmitted orally without ejaculation