What should you do when your about to have a test telling your mom that your having sex but you don't want her to know but you want to past the test?

Pelvic exam?: If you are referring to a pelvic exam to determine if the hymen is intact--then that is not a good test. The hymen can be incomplete, absent, spontaneously ruptured, damaged by you, etc. Testing for stds or pregnancy can also help indicate if you've had sex--and were too foolish to require condoms for protection. Is no real "had-sex-test.".