My period is due tomorrow but I have absolutely no symptoms. Could I be pregnant? I need some advice please!?

I have always always always had mild cramps, very sore bbs, cravings, and a little acne the week leading up to my period, but I've had none of those this month. I am due to start tomorrow and I just don't know what to think, could I be pregnant? Or just a smooth period for the first time ever.. I just need some piece of mind because I won't be able to buy a hpt until next week, I blew this whole check for christmas presents:P Thank you, C.