According to the American Social Health Organization, one out of four teens in the United States becomes infected with an STD each year. By the age of 25, half of all sexually active young adults will get an STD.
There are three stages of syphilis. Call your doctor if you experience any of the following symptoms:
In the first (primary) stage, which usually starts about three weeks after exposure, a painless sore called a chancre appears on the genitals, rectum, anus, or mouth. Lymph glands near the chancre may be swollen as well. The chancre lasts three to six weeks and will heal on its own. This does not mean that you are cured. Left untreated, the disease may progress to the second stage.
If you are given an antibiotic to treat an STD, it's important that you take all of the drug, even if the symptoms go away. Also, never take someone else's medicine to treat your illness. By doing so, you may make it more difficult to diagnose and treat the infection. Likewise, you should not share your medicine with others. Some doctors, however, may provide additional antibiotics to be given to your partner so that you can be treated at the same time.