I'm a idiot.

So I've done something so stupid. Like when girls post on here and are all like am I pregnant I had unprotected sex..." I'm like why would you do that and risk it? But now I'm one of those girls. I'm just kinda freaking out... I know I'm most likely not pregnant, but you know I can't help but think that there's possibility. We had unprotected sex yesterday. But not enough to get him anywhere close to cum. It takes a lot for my boyfriend to get off, I'm the one that's easy. I'm worried. But I know that I am emotionally ready to have a child. Just not finacially, which isn't fair to the child... I know... We've been dating for a year and half now and we're very serious. I love him and we're promised. We're both 19. In college. But I know if I got pregnant I would be okay. I'm just scared of my parents... But I would be fine. Should I still take a plan b? Or just wait it out? I already took it once because the condom broke and I really don't want to put my body through that again... I honestly think I'm fine.. But it's usually the people that believe that that get pregnant...