Can a pregnancy test become positive 5 days aftersex or was i already pregnant from an previous encounter ?

From a pervious: Encounter. It takes @ 10-14 days for a pregnancy test to turn positive.

Pregnant: Pregnancy test will not give you positive test 5 days after intercourse. It takes time for the body to produce high enough level of hormone to be detected by your pregnancy kit. If the test is positive, that means you are already pregnant from your previous encounter.