pregnacny on day of ovulation

Hi i have concern as i get my periods on 4 december than after that i had unprotected sex on 8 december then i took unwanted 72 with in 12 hrs and after that again on 9 we had unprotected sex and leave his sperm inside but that time i didnt took unwanted 72 because i just had it 5-6 hrs before .. and after that today i am geting bleeding as there is not even my periods date please help me out.. what should i do now am i pregnant??