I had unprotected sex on sat and started getting light period like pains on Mon and Tues. When i woke up on Tues i had ovulation discharge which i wiped away and didnt come back. I usually have this for two/three days. LAter that day my discharge turned normal but had blood in it. I have done some research on implantation bleeding....could this be too soon to experience implantation bleeding? My next period is due on Xmas day..what is the earliest i can take a test? What are the chances of me being pregnant?