If you have an STI, tell your partner so they can get checked. It may be embarrassing. But if you don't talk about it, your partner could end up having serious health problems. They could also pass the disease back to you or on to others. If you're not sure what to say, ask your healthcare provider or nurse.
Treatments to prevent an HIV infection are also available. Talk with your healthcare provider about prevention options if you are sexually active or have been diagnosed with an STI in the past.