Condoms protect against unplanned pregnancy and most sexually transmitted infections, including HIV, gonorrhoea, chlamydia, and syphilis. Use only water or silicone based lubricant with a condom during vaginal and particularly anal sex Personal lubricant Wikipedia Do spermicide condoms work? Pros and cons Using condoms during oral sex isn't just about preventing pregnancy it's crucial for protecting against STIs too. REMEMBER: Talking about boundaries and protection before things get hot and heavy