I really don't know about this stuff

Well I had Unprotected sex (😓), but he pulled out. It was a week and a half ago. I know the withdrawal method is the worst form of birth control and I'm pissed at myself. My period was supposed to start yesterday, but obviously since I'm writing this it didn't. Is it too early to take a test? I really haven't showed any huge symptoms of being pregnant but I'm still nervous, and if I really am pregnant I literally have no idea what to do. Any help would be awesome! Thanks!