

Has anyone ever doubted their parents are their parents? Most teenagers about their biological parents during puberty.
Is it possible that you were abducted after running away? Yes. Is it very likely? No. These cases are rare but get lots of news coverage.
If you’re under 40, the lack of pictures of your childhood could be conspicuous. Most parents document the progress of their kids and after the advent of digital photography there should be lots of evidence to put your mind at ease.




Machine learning is so good now that it can ID your face as a baby as well. Not always, but with enough pictures you’ll reach statistical certainty.
Other than that you could maybe test DNAs. On a less invasive level, if you know your blood type, you could ask your parents for theirs and see if that makes sense.