So, I had sex about 8 weeks ago. Last month (3 weeks after last having sex) I got my period at the usual time but it was lighter than usual. This month exactly 1 week before i am supposed to get my period I have started spotting. It's been happening for about 4-5 days now and goes in and out. Sometimes it is only when I wipe and other times I need to change my underwear. I'm on the pill and we used a condom. I also had a pap smear 2 days before getting my period last month. However, I'm afraid with having an unusually light period last month and now bleeding a week early this month that it could mean pregnancy. Would a pap smear have found that I was pregnant or do I need a blood test for that?