According to my three <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period apps</a>, my period is 9-12 days late today. Last month during my last period, after & pretty much the whole month I had intercourse with my SO. No preventative methods at all. I've always thought I couldn't get pregnant so I never worried about it too much. I'm 19. What's the chances I'm even pregnant? & When should I test? I've had a couple symptoms, but kinda think it's still too early to know.  Nervous but wouldn't mind at all if I am! Any advice?