Positive OPK

Danielle
Ok so this morning I took a First Response Digital opk and it gave me a yes +. As of yesterday I was still spotting from my period, I'm only on cd 9, is it possible to get a positive this early? I have pretty regular 28 day cycles. Have I missed my time to bd? I didn't test yesterday, could that positive be left over from yesterday? I'm so scared I missed my time!