Implantation or start of period?

Han • Future Mummy
We're TTC #1 and my period is due 6th and have had cramps and period pains but no bleeding until just now. It was only a couple of spots in the loo but looked like it was creamy too. I've never had spotting before but I was just wondering if it's possible I'm pregnant (with all these symptoms) or just my period playing up? 
Thanks in advance.