Confused...

My last period started on the 6th of October and ended on the 11th. I'm always normal but on the 23 i had unprotected sex with the goal of getting pregnant. Its only been 8 days since i had unprotected sex but today i am not sure if I'm on my period or if I'm just having some normal spotting because my period isn't due until the 6th. We both want this baby. What is going on? Did i fail or should i give it some time?