Use condoms.
Stay faithful.
Get tested.
When in doubt, see a medical professional.
Stop having anal and vagina sex at the same time without changing condoms or cleaning up, it is absolutely disgusting to put your penis in the anus and then switch it to the vagina, it is unhygienic and can get you infected.

Use condoms.

Abstain if you can't be faithful.

MouthAction, use a tungdom or dental dam.

Get vaccinated against Hepatitis.


If your condom should tear while in action, take yourself and your partner to a reputable lab and get tested within 24 hours.

Don't use condom in the first round and go flesh-to-flesh in the second round, it betrays the very aim of STD prevention by the use of condom.