Suggestions?

Ok guys, I'm looking for suggestions. Me and my partner had protected sex several times over the last couple of weekends it's now (Dec 5-6) I've had very light spotting, I mean very light barely anything - and the normal cramps I get before my period which I am usually supposed to start next week (Dec 12). I am religious about using condoms properly EVERY time before any contact is made and being careful afterwards about taking care cleaning up afterwards. 
Is there any way I could be starting a week early and it's just taking forever to fully start? Is there any way I could be pregnant? Any suggestions would be very helpful to settle my worries.