If you have protected sex with two different people within the same day will you get an STD?

If you have used a dental dam or condom, then your chances of getting a sexually transmitted infections (STI/STD) is low in each sexual encounter you have. However, if your protection did not include a barrier method like condoms or dental dams, then your chance of getting an infection becomes higher after having sex. Your chance of getting an STI increases with the number of sexual partners you have, as your exposure to potential sources of infection are higher. That is why it is important to use condoms whenever possible to decrease your chance of getting an infection.