I've been so tired the last three days...

Like to the point of I come home from work and i pass out. And when I wake up the next day I want to continue to sleep... I know this is a sign of pregnancy but I don't feel pregnant... and what I mean is I don't feel any kind of pressure down there, my boobs aren't sore, and I haven't been nauseous... just been plain tired... could this be normal? I dont know if I'm pregnant. I figured I'll take a test when I miss my period which comes in 5 days. (Btw had have no cramping.) And I'm 9dpo. I also had some very little bleeding yesterday..