Our expert says:
If you have unprotected sex with someone who does have an STI, then any amount of skin on skin exposure, or exchange of fluids could theoretically result in infection. If you are concerned about this, put your mind at ease and have a sexual health screen.
Common symptoms of an STI would include: discharge from the penis, burning when urinating, blisters or warts on the penis. Some STI's are, however, 'silent' and can only be detected by specific tests...
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