Preggo?

Just 2 days ago me and my boyfriend had sex. We have not had condoms in a while but that's only because neither on of us has had the money (yet) we have been good about not putting it in me because he has pre cum and I don't feel like getting preggo yet. I want to take a test but I feel like it's to early to tell. My period is suppose to start in 2 days. I dont know what to do and I have not tolled my boyfriend. My mom knows I've been having sex but she lives out of state and I'm not telling my dad for a long time. But I think my boyfriend's parents know that we have had sex.