To avoid receiving a false negative response, a woman should wait a week past her missed period before testing. By waiting, she ensures the hCG in her system is detectable.

If a woman gets a negative response but does not get her period, she should wait another week and test again.

In cases where women do not track their cycle or have irregular periods, it can be challenging to know when to expect their period. In this situation, a woman can expect accurate test results two weeks after unprotected sex.