Tests are the only way to know for sure if you have an STD. So, if you've had any type of sexual contact that could transmit sexually transmitted diseases, such as vaginal, anal or oral sex, talk to a doctor or nurse about getting tested. In most states, once you are 13 years old, you can get tested for sexually transmitted diseases without the participation of your parents. Many family doctors or pediatricians will agree to treat their adolescent patients confidentially.
That means they won't tell their parents or anyone else unless you say it's okay. So you may be able to ask your own doctor if he will. How do you know if you have an STI? The short answer is that you don't. If you're sexually active, getting tested for sexually transmitted diseases is one of the most important things you can do to protect your health.
Be sure to have an open and honest conversation about your sexual history and STI testing with your doctor and ask if you should be tested for STDs. If you don't feel comfortable talking to your regular healthcare provider about STDs, there are many clinics that offer confidential, free or low-cost testing.