My Boyfriend Had A Little Bit Of Sperm On His

My boyfriend had a little bit of sperm on his hands, washed it, then fingered me. Is it possible for me to be pregnant. I was 7 days late then my "period" came on the 8th day. Starting with a light amount of brown blood then proceeding to heavier bright red blood. On the 9th day the bleeding is stopping and starting again. Is this implantation bleeding? Am I pregnant?