How to know if my partner has a STI

• The only way to be sure about the health of your partner is to ask him or her to get tested and share the results. 
• Even if your partner looks and feels perfectly healthy, he or she might be carrying an STI. This is because many STIs cause no symptoms. And you cannot tell by looking at someone if they have an STI.
• The same is true for you as well. If you have had unsafe sex but are experiencing no symptoms and feeling just fine, you might still have an STI. 
• The bottom line: anyone who is sexually active should get tested regularly and use condoms and contraceptives consistently and correctly.