Question: how long does it take to know if you have syphilis?
Answer: Symptoms for the first stage normally appear 10 days to 3 months after you're exposed to syphilis. You might notice that the lymph nodes near your groin are enlarged. Typically, the first visible sign of syphilis is a small, painless sore (doctors call it a “chancre”) on the skin (you may develop several sores).