Vaginal or anal intercourse with a condom, and oral sex or rimming with a dam fall into this category. Unsafe Sex is sex which holds a HIGH risk for infection or injury. Anal or vaginal intercourse without a condom falls in this category. Basically, you should avoid any situation in which the body fluids of another person might get into your bloodstream. Tiny tears in the gums, finger cuticles, penis, vagina, or anus can provide an opening where body fluids may enter, even if the tears are not visible or noticeable.
Infections can also enter the body through the eyes.
There are other symptoms - see your health care provider if you have any questions. Some diseases show no symptoms at all, and the people carrying them may not know they are infected or show any noticeable signs for years, though they can still transmit the disease to you. Some STD's, such as Herpes, may be spread by contact with the general areas of the genitals, anus, or mouth. Rashes or outbreaks are often a sign of infection and contagiousness, though it is possible for some of these diseases to be transmitted when there are no visible symptoms. A dam is a thin sheet of latex rubber, especially designed for use during safer oral sex.