How to use the pregnancy test stick As a commonly used self-test tool, the pregnancy test stick is very simple to use. The general steps are as follows: First, first understand the exact time of self-test, which is usually about two weeks after sexual intercourse (that is, 14 days after conception). If the self-test is performed earlier than this time, errors and false negatives may occur. Secondly, take out the pregnancy test stick from the soft packaging, being careful not to touch the top of the test paper. Secondly, place the test paper end of the pregnancy test stick in the outflowing urine. Generally, it needs to be placed for 5 seconds.