If you're wondering, "How do I know if I really won a sweepstakes?", the first step is to verify the source of the notification. Legitimate winners are usually contacted directly by the sweepstakes sponsor, not through unsolicited emails or phone calls. Check for official communication, such as a confirmation email or a letter. Additionally, visit the official website of the sweepstakes to see if winners are publicly announced. Remember, if you're still asking, "How do I know if I really won a sweepstakes?", trust your instincts and be cautious of potential scams.