question: hi sir me m my girlfnd have sex on 31jan 13 n have used a condom n her last period was on25jan to 30jan n after having sex within in 2hours she has taken unwanted72.after taken unwanted72 she got bleeding for 2hours on 5feb2013 . and her next period date 26feb but till now 5of mach 2013 she did not got her period so is there any chance of prenancy bcoz we dnt want baby this we r student so plz tell n help me when she will have her periods plz reply as soon as possible bcoz we r 2 tensed sir