If you suspect that you have been exposed to an STD (for example, if you have had unprotected sex, sex with a new partner, the condom breaks or you begin experiencing unexplained symptoms) you should get tested. The only way to know for sure if you have a sexually transmitted disease is to get tested. Most infections can be easily treated with a round of antibiotics. If left untreated, however, they can cause serious complications such as pelvic inflammatory disease, infertility or, in the case of HIV, premature death. While some infections, such as genital herpes and HIV infection cannot be cured, medical intervention can significantly improve the health of those affected. Medication is available that can diminish the impact of these infections on your everyday life.