If you believe that you are in Christ, you need to ask yourself this question. The bible commands it. If you refuse to obey this command, you already have the honest answer. No. You are not. And you suspect that already because biblically testing yourself pricks your religious pride, or you know somewhere in there that you fail the test.
“Examine yourselves, to see whether you are in the faith. Test yourselves. Or do you not realize this about yourselves, that Jesus Christ is in you?—unless indeed you fail to meet the test!”~II Corinthians 13:5