I was supposed to start my period between Sunday and today and today during lunch I thought I did but it's really light pink when I wipe and stuff and this is all that's there after a few hours.. could it be spotting? Usually my periods are really heavy and I would to have changed my pad by then.. which actually I usually use tampons.. but it was so light that I didn't. Is there a possibility I'm pregnant? Should I take a test? And if so what test works best?