Scared :O

I'm scared Im pregnant, and I've been having symptoms .. Friday will be three weeks since intercourse, Im getting three because I have no idea how actuate the test will be since Im taking one tomorrow morning.. I'm also taking another next week, and then another to know for sure .. I'm only 15, 16 in October, so you can see why I'm scared.. Any ideas on how accurate the test will be if accurate at all ?