After a nonconsensual sexual act, a reader is concerned that he might have an STI.

Doctor Nitin Shori, Medical Director of, answers.

Dear Doctor,

A man recently put their mouth on my penis for a few seconds before I told them to get off. It was not exactly consensual. I have a boyfriend and I am very worried the guy could have passed on an STI to me. Are the chances of doing so very low seeing as it was only a second or two and it was receptive? Thanks


First of all, it’s never OK for someone to engage in any sexual practice with you that you do not give your consent to. Forcing someone to engage in sexual activity without their consent is a crime – it’s sexual assault/rape.

If you have been a victim of a sexual attack and want to report it, call your local police or 999 if an emergency. You can also get support from organisations such as Victim Support or The Survivors Trust.

Sexually transmitted infections (STIs) can be passed on through oral sex. The STIs that are most commonly passed on through oral sex are gonorrhoea, genital herpes and syphilis. However, all STIs can be passed this way. Receiving oral sex is often safer than giving oral sex, as you are less likely to be exposed to genital fluids.

Many people do not get any signs or symptoms that they have been infected through oral sex, so if you are worried, it is always worth getting tested by your GP or local sexual health clinic. To protect yourself against infections during oral sex, use a condom or dental dam – a small square of very thin plastic or latex, which can be used to cover the genitals or anus.

Avoid oral sex if your partner has an STI, has blisters, cuts, rashes, sores or warts around the genitals, anus or mouth, has a throat infection or has any unhealed piercings in their mouth or genitals. Regular STI checks are a good idea, to ensure you have a healthy sex life.

Have you got a question?

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