Keep in mind that no sex is completely safe. Ask questions about his or her sexual history or history of IV drug use before you head off to bed. Use a condom every time you have sexual intercourse or when men are receiving oral sex. Don't be afraid to ask and don't hesitate to back off from sex if your partner doesn't want to use condoms. Try pairing condoms with spermicidal jelly or foam, which may offer additional protection against STDs and unwanted pregnancy.
Barrier protection is important when engaging in other sexual activities, too.
Use dental dams whenever a woman is receiving oral sex. And keep in mind that STDs can be transmitted during intercourse using sexual aides or other body parts, such as fingers. Avoid binge drinking. Drinking lowers your inhibitions, and drinking a lot may lead you to actions you may regret the next day. If you have any doubts about your own sexual health or the health of your partner, get tested.