If missed periods are bothering you especially after an episode of unprotected sex it is better to confirm your status with a pregnancy test. There are various options available to confirm your pregnancy. You can either go for a home pregnancy test or opt for a blood or urine test to put your mind to rest. Here are a few tests that can help you know about your pregnancy status. Pregnancy Tests - how they work About six to twelve days after fertilization implantation of fertilised egg to the uterine wall occurs. Human chorionic gonadotropin (hCG) produced by the cells