You do, if your name is on a credit account and the credit issuer reports to a credit bureau. A "credit account" means something that must be repaid, like a loan or credit card. Adults who don't have traditional credit accounts likely don't have credit reports. And minors likely won't have a credit report unless they're authorized users on an adult's credit card.
When you are doing a credit check yourself pulling your annual free credit report you are performing a soft credit inquiry. This type of action does not impact your credit at all. On the other hand if you are applying for a loan, a credit card, or a mortgage, that will be counted as a hard credit inquiry and will slightly decrease your credit score.
To order, visit annualcreditreport.com, call 1-877-322-8228. Or complete the Annual Credit Report Request Form and mail it to: Annual Credit Report Request Service, P.O. Box 105281, Atlanta, GA 30348-5281. Do not contact the three nationwide credit reporting companies individually. They are providing free annual credit reports only through annualcreditreport.com, 1-877-322-8228 or mailing to Annual Credit Report Request Service.