Most importantly, get tested is to protect yourself, your partner, and to stay informed. Getting a diagnosis can alert you to an infection you may not know you had (e.g. many people hepatitis C, 7 out of 10 people have no idea they have been infected), or that may have long-term effects like infertility. It can also allow you to start treatment if you do have an infection before it get worst, and create peace of mind when you think you may have been at risk.
You should be tested when you’re sexually active. Everyone who is sexually active (even if you’ve only ever had one partner and always use protection) should be screened at some point. We recommend an HIV test for everyone who is sexually active. We also suggest women obtain a test for gonorrhea and chlamydia, because, unlike men, they frequently harbor these infections without developing symptoms. Keep in mind that if you’re practicing safe sex and are in a monogamous relationship, you can get tested less frequently.