Period coming or pregnancy ?

I was supposed to get my period today it's still early in the morning so I'm not gonna freak just yet. But I have no signs of neither a period or pregnancy. I have no cramps, no brown discharge, no smell, my boobs are completely normal, basically I feel like I'm not even gonna start my period. I have been moody but I'm always like that around my period / on my period. & I am bloated. I do smoke weed, & every now n then a cigarette. I did the Q-tip method but the Q-tip was clear there was nothing on it. 
Someone please help, I need to get my period! I cannot be pregant. Does it sound like I gonna start today or no.